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Category: Exploits

Explore the latest software exploits, zero-day vulnerabilities, and security PoCs. Geek-Guy provides expert analysis on emerging threats and how to stay protected.

CTEM in Practice: Prioritization, Validation, and Outcomes That Matter

Cybersecurity teams increasingly want to move beyond looking at threats and vulnerabilities in isolation. It’s not only about what could go wrong (vulnerabilities) or who might attack (threats), but where they intersect in your actual environment to create real, exploitable exposure. Which exposures truly matter? Can attackers exploit them? Are our defenses effective? Continuous Threat…

Amnesia RAT deployed in multi-stage phishing attacks against Russian users

A multi-stage phishing campaign targets users in Russia with ransomware and Amnesia RAT using fake business documents as lures. FortiGuard Labs researchers uncovered a multi-stage malware campaign mainly targeting users in Russia. The attack uses fake business documents as social engineering lures to distract victims while malware runs in the background. It escalates to full…

Microsoft Office Zero-Day (CVE-2026-21509) – Emergency Patch Issued for Active Exploitation

Microsoft on Monday issued out-of-band security patches for a high-severity Microsoft Office zero-day vulnerability exploited in attacks. The vulnerability, tracked as CVE-2026-21509, carries a CVSS score of 7.8 out of 10.0. It has been described as a security feature bypass in Microsoft Office. “Reliance on untrusted inputs in a security decision in Microsoft Office allows…

Dormakaba flaws allow to access major organizations’ doors

Researchers found over 20 flaws in Dormakaba access systems that could let attackers remotely unlock doors at major organizations. Researchers from SEC Consult discovered and fixed more than 20 security flaws in Dormakaba physical access control systems. The experts uncovered multiple critical vulnerabilities in Dormakaba physical access control systems based on exos 9300. These enterprise…

OMB rescinds ‘burdensome’ Biden-era secure software memo

The Trump administration is rescinding a Biden-era memo that was intended to help agencies buy secure software, with the current Office of Management and Budget saying it relied on “unproven and burdensome” processes. A former Biden administration official said the move is “the first major policy step back that I have seen in the administration…

Some ChatGPT browser extensions are stealing your data

ChatGPT users beware: your browser extensions could be used to steal your accounts and identity. LayerX Research has identified at least 16 Chrome browser extensions for ChatGPT floating around the internet that promise to enhance work productivity. All show signs of being built by the same threat actor and designed for the same purpose: to…

Emergency Microsoft update fixes in-the-wild Office zero-day

Microsoft issued emergency updates to fix an actively exploited Office zero-day, CVE-2026-21509, affecting Office 2016–2024 and Microsoft 365 Apps. Microsoft released out-of-band security updates to address an actively exploited Office zero-day vulnerability tracked as CVE-2026-21509. The issue is a security feature bypass vulnerability that affects multiple Office versions, including Microsoft Office 2016, Microsoft Office 2019,…

Microsoft releases second out-of-band fix for Windows in a week

Outlook users have reported difficulties with Microsoft’s January Patch Tuesday updates, forcing Microsoft, once again, to patch some of its patches. Users reported that, after applying the January 13 Windows updates, some applications became unresponsive or encountered unexpected errors when opening files from or saving files to cloud-based storage such as OneDrive or Dropbox. In…

Microsoft releases second out-of-band fix for Windows in a week

Outlook users have reported difficulties with Microsoft’s January Patch Tuesday updates, forcing Microsoft, once again, to patch some of its patches. Users reported that, after applying the January 13 Windows updates, some applications became unresponsive or encountered unexpected errors when opening files from or saving files to cloud-based storage such as OneDrive or Dropbox. In…

SECURITY AFFAIRS MALWARE NEWSLETTER ROUND 81

Security Affairs Malware newsletter includes a collection of the best articles and research on malware in the international landscape Malware Newsletter UNO reverse card: stealing cookies from cookie stealers  PDFSIDER Malware – Exploitation of DLL Side-Loading for AV and EDR Evasion   VoidLink: Evidence That the Era of Advanced AI-Generated Malware Has Begun  PyPI Package Impersonates…

Security Affairs newsletter Round 560 by Pierluigi Paganini – INTERNATIONAL EDITION

A new round of the weekly Security Affairs newsletter has arrived! Every week, the best security articles from Security Affairs are free in your email box. Enjoy a new round of the weekly SecurityAffairs newsletter, including the international press. Osiris ransomware emerges, leveraging BYOVD technique to kill security tools U.S. CISA adds a flaw in…

U.S. CISA adds a flaw in Broadcom VMware vCenter Server to its Known Exploited Vulnerabilities catalog

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds a flaw impacting Broadcom VMware vCenter to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added a Broadcom VMware vCenter Server vulnerability, tracked as CVE-2024-37079 (CVSS score of 9.8), to its Known Exploited Vulnerabilities (KEV) catalog. vCenter Server is a centralized management platform developed…

CISA Adds Actively Exploited VMware vCenter Flaw CVE-2024-37079 to KEV Catalog

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Friday added a critical security flaw affecting Broadcom VMware vCenter Server that was patched in June 2024 to its Known Exploited Vulnerabilities (KEV) catalog, citing evidence of active exploitation in the wild. The vulnerability in question is CVE-2024-37079 (CVSS score: 9.8), which refers to a heap…

11-Year-Old critical telnetd flaw found in GNU InetUtils (CVE-2026-24061)

Critical telnetd flaw CVE-2026-24061 (CVSS 9.8) affects all GNU InetUtils versions 1.9.3–2.7 and went unnoticed for nearly 11 years. A critical vulnerability, tracked as CVE-2026-24061 (CVSS score of 9.8), in the GNU InetUtils telnet daemon (telnetd) impacts all versions from 1.9.3 to 2.7. The vulnerability can be exploited to gain root access on affected systems.…

Fortinet confirms new zero-day attacks against customer devices

Fortinet has confirmed that a new attack campaign observed recently against customer devices is exploiting an unpatched issue to bypass authentication. The new attacks are different from a previous campaign seen in December that targeted two vulnerabilities related to FortiCloud single sign-on (SSO) authentication. “Recently, a small number of customers reported unexpected login activity occurring…

Fortinet warns of active FortiCloud SSO bypass affecting updated devices

Fortinet confirmed attacks are bypassing FortiCloud SSO authentication, affecting even fully patched devices, similar to recent SSO flaws. Fortinet confirmed attacks bypass FortiCloud SSO on fully patched devices. Threat actors automate firewall changes, add users, enable VPNs, and steal configs, in campaigns resembling December 2025 exploits of critical FortiCloud SSO flaws. Arctic Wolf researchers reported…

CISA Updates KEV Catalog with Four Actively Exploited Software Vulnerabilities

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Thursday added four security flaws to its Known Exploited Vulnerabilities (KEV) catalog, citing evidence of active exploitation in the wild. The list of vulnerabilities is as follows – CVE-2025-68645 (CVSS score: 8.8) – A PHP remote file inclusion vulnerability in Synacor Zimbra Collaboration Suite (ZCS) that…

CVE-2026-24061 Detection: Decade-Old Vulnerability in GNU InetUtils telnetd Enables Remote Root Access

Update (January 28, 2026): This article has been updated to feature a dedicated detection rule set focused on CVE-2026-24061 exploitation. Dive into the threat overview and access the updated rule collection, which now contains 5 content items. A new day, a new challenge for cyber defenders. Right after the disclosure of a nasty zero-day vulnerability…

CVE-2026-24061 Detection: Decade-Old Vulnerability in GNU InetUtils telnetd Enables Remote Root Access

Update (January 28, 2026): This article has been updated to feature a dedicated detection rule set focused on CVE-2026-24061 exploitation. Dive into the threat overview and access the updated rule collection, which now contains 5 content items. A new day, a new challenge for cyber defenders. Right after the disclosure of a nasty zero-day vulnerability…

CVE-2026-24061 Detection: Decade-Old Vulnerability in GNU InetUtils telnetd Enables Remote Root Access

Update (January 28, 2026): This article has been updated to feature a dedicated detection rule set focused on CVE-2026-24061 exploitation. Dive into the threat overview and access the updated rule collection, which now contains 5 content items. A new day, a new challenge for cyber defenders. Right after the disclosure of a nasty zero-day vulnerability…

CVE-2026-24061 Detection: Decade-Old Vulnerability in GNU InetUtils telnetd Enables Remote Root Access

Update (January 28, 2026): This article has been updated to feature a dedicated detection rule set focused on CVE-2026-24061 exploitation. Dive into the threat overview and access the updated rule collection, which now contains 5 content items. A new day, a new challenge for cyber defenders. Right after the disclosure of a nasty zero-day vulnerability…

CVE-2026-24061 Detection: Decade-Old Vulnerability in GNU InetUtils telnetd Enables Remote Root Access

Update (January 28, 2026): This article has been updated to feature a dedicated detection rule set focused on CVE-2026-24061 exploitation. Dive into the threat overview and access the updated rule collection, which now contains 5 content items. A new day, a new challenge for cyber defenders. Right after the disclosure of a nasty zero-day vulnerability…

CVE-2026-24061 Detection: Decade-Old Vulnerability in GNU InetUtils telnetd Enables Remote Root Access

Update (January 28, 2026): This article has been updated to feature a dedicated detection rule set focused on CVE-2026-24061 exploitation. Dive into the threat overview and access the updated rule collection, which now contains 5 content items. A new day, a new challenge for cyber defenders. Right after the disclosure of a nasty zero-day vulnerability…

Fortinet Confirms Active FortiCloud SSO Bypass on Fully Patched FortiGate Firewalls

Fortinet has officially confirmed that it’s working to completely plug a FortiCloud SSO authentication bypass vulnerability following reports of fresh exploitation activity on fully-patched firewalls. “In the last 24 hours, we have identified a number of cases where the exploit was to a device that had been fully upgraded to the latest release at the…

U.S. CISA adds Prettier eslint-config-prettier, Vite Vitejs, Versa Concerto SD-WAN orchestration platform, and Synacor Zimbra Collaboration Suite flaws to its Known Exploited Vulnerabilities catalog

U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds Prettier eslint-config-prettier, Vite Vitejs, Versa Concerto SD-WAN orchestration platform, and Synacor Zimbra Collaboration Suite flaws to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added Prettier eslint-config-prettier, Vite Vitejs, Versa Concerto SD-WAN orchestration platform and Synacor Zimbra Collaboration Suite flaws to its Known Exploited Vulnerabilities…

Ransomware gang’s slip-up led to data recovery for 12 US firms

Twelve US companies hit by the INC ransomware group were able to recover encrypted data after a cybersecurity firm discovered the cloud storage infrastructure where the gang stockpiled what it stole. Researchers at Florida-based Cyber Centaurs said Thursday they took advantage of a lapse in operational security by the gang: They found artifacts left behind…

News Alert: Halo Security earns SOC 2 Type II certification, shows sustained operational security

MIAMI, Jan. 22, 2026, CyberNewswire — Halo Security, a leading provider of external attack surface management and penetration testing services, today announced it has successfully achieved SOC 2 Type II compliance following an extensive multi-month audit by Insight Assurance. This certification validates that Halo Security’s security controls are not only properly designed but also operate…

Trivial Telnet authentication bypass exposes devices to complete takeover

Computers with Telnet open are in immediate danger of being compromised due to a critical vulnerability that allows attackers to bypass authentication. The Telnet remote access protocol has long been superseded by the more secure and encrypted SSH, but many IoT and embedded devices have continued to ship with Telnet exposed on the LAN interface…

Critical Cisco UC bug actively exploited

Cisco has released patches for a critical remote code execution vulnerability in its unified communications products that attackers are actively exploiting. The US Cybersecurity and Infrastructure Security Agency has added the flaw to its Known Exploited Vulnerabilities catalog, confirming the exploitation. Cisco disclosed CVE-2026-20045 along with patches for Unified Communications Manager, Unity Connection, and Webex…

Critical SmarterMail vulnerability under attack, no CVE yet

A SmarterMail flaw (WT-2026-0001) is under active attack just days after its January 15 patch, with no CVE assigned yet. A newly disclosed flaw in SmarterTools SmarterMail is being actively exploited just two days after a patch was released. The issue, tracked as WT-2026-0001 and lacking a CVE, was fixed on January 15, 2026, with…

CVE-2026-20045: Critical Zero-Day in Cisco Products Is Actively Exploited in the Wild

Hot on heels of the DoS vulnerability in Palo Alto Networks’ GlobalProtect (CVE-2026-0227), security professionals are facing another major challenge. This time, Cisco announced that several of its unified communications products are affected by a critical remote code execution (RCE) vulnerability. If successfully exploited, the flaw enables hackers to execute malicious commands on the underlying…

CVE-2026-20045: Critical Zero-Day in Cisco Products Is Actively Exploited in the Wild

Hot on heels of the DoS vulnerability in Palo Alto Networks’ GlobalProtect (CVE-2026-0227), security professionals are facing another major challenge. This time, Cisco announced that several of its unified communications products are affected by a critical remote code execution (RCE) vulnerability. If successfully exploited, the flaw enables hackers to execute malicious commands on the underlying…

CVE-2026-20045: Critical Zero-Day in Cisco Products Is Actively Exploited in the Wild

Hot on heels of the DoS vulnerability in Palo Alto Networks’ GlobalProtect (CVE-2026-0227), security professionals are facing another major challenge. This time, Cisco announced that several of its unified communications products are affected by a critical remote code execution (RCE) vulnerability. If successfully exploited, the flaw enables hackers to execute malicious commands on the underlying…

CVE-2026-20045: Critical Zero-Day in Cisco Products Is Actively Exploited in the Wild

Hot on heels of the DoS vulnerability in Palo Alto Networks’ GlobalProtect (CVE-2026-0227), security professionals are facing another major challenge. This time, Cisco announced that several of its unified communications products are affected by a critical remote code execution (RCE) vulnerability. If successfully exploited, the flaw enables hackers to execute malicious commands on the underlying…

CVE-2026-20045: Critical Zero-Day in Cisco Products Is Actively Exploited in the Wild

Hot on heels of the DoS vulnerability in Palo Alto Networks’ GlobalProtect (CVE-2026-0227), security professionals are facing another major challenge. This time, Cisco announced that several of its unified communications products are affected by a critical remote code execution (RCE) vulnerability. If successfully exploited, the flaw enables hackers to execute malicious commands on the underlying…

Actively exploited Cisco UC bug requires immediate, version‑specific patching

Cisco has released patches for a critical remote code execution vulnerability in its unified communications products that attackers are actively exploiting. The US Cybersecurity and Infrastructure Security Agency has added the flaw to its Known Exploited Vulnerabilities catalog, confirming the exploitation. Cisco disclosed CVE-2026-20045 along with patches for Unified Communications Manager, Unity Connection, and Webex…

Arctic Wolf detects surge in automated Fortinet FortiGate firewall configuration attacks

Arctic Wolf warned of a new wave of automated attacks making unauthorized firewall configuration changes on Fortinet FortiGate devices. Arctic Wolf researchers reported a new automated attack cluster observed since January 15, 2026, targeting FortiGate devices. Attackers created generic accounts for persistence, enabled VPN access, and exfiltrated firewall configurations. The activity resembles a December 2025…

U.S. CISA adds a flaw in Cisco Unified Communications products to its Known Exploited Vulnerabilities catalog

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds a flaw impacting Cisco Unified Communications products to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added a Cisco Unified Communications products vulnerability, tracked as CVE-2026-20045 (CVSS score of 8.2), to its Known Exploited Vulnerabilities (KEV) catalog. This week, Cisco patched a critical zero-day…

Cisco Fixes Actively Exploited Zero-Day CVE-2026-20045 in Unified CM and Webex

Cisco has released fresh patches to address what it described as a “critical” security vulnerability impacting multiple Unified Communications (CM) products and Webex Calling Dedicated Instance that it has been actively exploited as a zero-day in the wild. The vulnerability, CVE-2026-20045 (CVSS score: 8.2), could permit an unauthenticated remote attacker to execute arbitrary commands on…

Cisco fixed actively exploited Unified Communications zero day

Cisco patched a critical zero-day RCE flaw (CVE-2026-20045) in Unified Communications and Webex Calling that is actively exploited in the wild. Cisco patched a critical zero-day remote code execution flaw, tracked as CVE-2026-20045 (CVSS score of 8.2), actively exploited in attacks. An unauthenticated, remote attacker can exploit the flaw to execute arbitrary commands on the…

Comparing Comprehensive Email Threat Protection Solutions With AI Capabilities

Comprehensive email threat protection with artificial intelligence (AI) capabilities is now essential for any business facing the growing volume and complexity of digital threats. Email remains a prime target because it’s accessible and frequently used for personal and professional communication. Cybercriminals exploit this by crafting highly targeted phishing emails or embedding malicious links that bypass…

Misconfigured demo environments are turning into cloud backdoors to the enterprise

Internal testing, product demonstrations, and security training are critical practices in cybersecurity, giving defenders and everyday users the tools and wherewithal to prevent and respond to enterprise threats. However, according to new research from Pentera Labs, when left in default or misconfigured states, these “test” and “demo” environments are yet another entry point for attackers…

News alert: Reflectiz study finds most third-party web apps access sensitive data without justification

BOSTON, Jan. 21, 2026, CyberNewswire — Reflectiz today announced the release of its 2026 State of Web Exposure Research, revealing a sharp escalation in client?side risk across global websites, driven primarily by third?party applications, marketing tools, and unmanaged digital integrations. According to the new analysis of 4,700 leading websites, 64% of third?party applications now access…

Zoom fixed critical Node Multimedia Routers flaw

Zoom addressed a critical security vulnerability, tracked as CVE-2026-22844, that could result in remote code execution. Cloud-based video conferencing and online collaboration platform Zoom released security updates to address multiple vulnerabilities, including command injection, tracked as CVE-2026-22844 (CVSS score of 9.9), in Zoom Node Multimedia Routers (MMRs) that could result in remote code execution. “A…

Jamf has a warning for macOS vibe coders

Just yesterday, we noted the growing threat of ransomware. Now, Jamf Threat Labs is warning that North Korean threat actors are abusing Visual Studio Code task configuration files for malware delivery in a campaign aimed at macOS software developers. It’s a classic attempt in which developers are tricked into using maliciously crafted GitHub/GitLab projects that contain malicious JavaScript…

ACME flaw in Cloudflare allowed attackers to reach origin servers

Cloudflare fixed a flaw in its ACME validation logic that could let attackers bypass security checks and access protected origin servers. Cloudflare fixed a flaw in its ACME HTTP-01 validation logic that could let attackers bypass security checks and reach origin servers. The issue stemmed from how Cloudflare’s edge handled requests to the /.well-known/acme-challenge/ path.…

Contagious Interview turns VS Code into an attack vector

Threat actors behind the long-running Contagious Interview campaign were seen expanding from traditional social-engineering lures to the abuse of Microsoft Visual Studio Code (VS Code) as an execution and persistence mechanism. According to new findings from Jamf Threat Labs, the actors are embedding malicious logic directly into VS Code project configurations, allowing code to execute…

13 cyber questions to better vet IT vendors and reduce third-party risk

Increased reliance on IT service providers, digital tools, and third-party software is greatly expanding the enterprise attack surface, with noteworthy cyberattacks over the past year underscoring this fact.  In October 2025, Marks & Spencer terminated its longtime helpdesk deal with outsourcing giant Tata Consultancy Services following a cyberattack that cost the British retailer an estimated…

For cyber risk assessments, frequency is essential

From a certain age, many people regularly visit their doctor for check-ups. In this way, risks and dangers can be identified early and appropriate measures taken. The same applies to cybersecurity: Regular risk assessments help security teams identify vulnerabilities and areas for improvement. Unfortunately, such assessments are not carried out universally. Advantages of a cyber…

CERT/CC Warns binary-parser Bug Allows Node.js Privilege-Level Code Execution

A security vulnerability has been disclosed in the popular binary-parser npm library that, if successfully exploited, could result in the execution of arbitrary JavaScript. The vulnerability, tracked as CVE-2026-1245 (CVSS score: N/A), affects all versions of the module prior to version 2.3.0, which addresses the issue. Patches for the flaw were released on November 26,…

Three vulnerabilities found in Anthropic Git MCP Server could let attackers tamper with LLMs

Threat actors could use prompt injection attacks to take advantage of three vulnerabilities in Anthropic’s official Git MCP server and cause mayhem with AI systems. This alert comes from researchers at Israel-based Cyata, which urges infosec leaders to make sure corporate developers using the official GIT MCP server update to the latest version as soon…

Flaws in Chainlit AI dev framework expose servers to compromise

Two vulnerabilities in popular AI development framework Chainlit could enable attackers to read arbitrary files and database content from servers. If left unpatched, the flaws could allow attackers to leak API keys and other secret tokens to facilitate lateral movement inside the organization’s infrastructure. “These vulnerabilities can be triggered with no user interaction,” researchers from…

PDFSIDER Malware – Exploitation of DLL Side-Loading for AV and EDR Evasion

Threat actors use PDFSIDER malware with social engineering and DLL sideloading to bypass AV/EDR, and ransomware gangs already abuse it. Resecurity has learned about PDFSIDER during an investigation of a network intrusion attempt that was successfully prevented by a Fortune 100 energy corporation. The threat actor contacted their staff, impersonating technical support, and used social…

Confidential Apple data hacked in claimed Luxshare attack

Highly confidential information concerning Apple, the company’s business practices, and designs has allegedly been hacked in a ransomware attack against a key Apple partner, Luxshare Precision Industry. The attacking group is called RansomHub, which claims to have purloined product data, confidential design files (including 3D CAD models), and personally identifiable employee information in the heist. The group…

Critical TP-Link VIGI camera flaw allowed remote takeover of surveillance systems

TP-Link fixed a critical flaw that exposed over 32 VIGI C and VIGI InSight camera models to remote hacking, with over 2,500 internet-exposed devices identified. TP-Link fixed a high-severity flaw, tracked as CVE-2026-0629 (CVSS score 8.7), affecting over 32 VIGI C and VIGI InSight camera models. The vulnerability lets attackers on a local network bypass…

Three Flaws in Anthropic MCP Git Server Enable File Access and Code Execution

A set of three security vulnerabilities has been disclosed in mcp-server-git, the official Git Model Context Protocol (MCP) server maintained by Anthropic, that could be exploited to read or delete arbitrary files and execute code under certain conditions. “These flaws can be exploited through prompt injection, meaning an attacker who can influence what an AI…

Hackers Use LinkedIn Messages to Spread RAT Malware Through DLL Sideloading

Cybersecurity researchers have uncovered a new phishing campaign that exploits social media private messages to propagate malicious payloads, likely with the intent to deploy a remote access trojan (RAT). The activity delivers “weaponized files via Dynamic Link Library (DLL) sideloading, combined with a legitimate, open-source Python pen-testing script,” ReliaQuest said in a report shared with

CrashFix attack hijacks browser failures to deliver ModelRAT malware via fake Chrome extension

Security researchers have uncovered a malicious browser extension campaign, dubbed CrashFix, that deliberately crashes victims’ browsers and then uses the resulting confusion to trick users into running attacker-supplied commands. The activity, attributed to a threat cluster Huntress calls KongTuke, involves a fake Chrome extension posing as an ad-blocking tool but ultimately delivering a novel malware…

Predator bots are exploiting APIs at scale. Here’s how defenders must respond.

The rise of malicious bots is changing how the internet operates, underscoring the need for stronger safeguards that keep humans firmly in control. Bots now account for more than half of global web traffic, and a new class of “predator bots” has emerged, unleashing self-learning programs that adapt in real time, mimic human behavior, and…

Google Gemini flaw exposes new AI prompt injection risks for enterprises

A newly disclosed weakness in Google’s Gemini shows how attackers could exploit routine calendar invitations to influence the model’s behavior, underscoring emerging security risks as enterprises embed generative AI into everyday productivity and decision-making workflows. The vulnerability was identified by application security firm Miggo. In its report, Miggo’s head of research, Liad Eliyahu, said Gemini…

Mandiant pushes organizations to dump insecure NTLMv1 by releasing a way to crack it

Google’s Mandiant security division has come up with an unusual tactic to persuade organizations to stop using the aged and hugely insecure NTLMv1 authentication protocol: publish a data lookup that makes cracking NTLMv1 credentials trivial for attackers. The intention, Mandiant explained, is to draw attention to the fact that, despite decades of evidence that NTLMv1…

Mandiant pushes organizations to dump insecure NTLMv1 by releasing a way to crack it

Google’s Mandiant security division has come up with an unusual tactic to persuade organizations to stop using the aged and hugely insecure NTLMv1 authentication protocol: publish a data lookup that makes cracking NTLMv1 credentials trivial for attackers. The intention, Mandiant explained, is to draw attention to the fact that, despite decades of evidence that NTLMv1…

Security Bug in StealC Malware Panel Let Researchers Spy on Threat Actor Operations

Cybersecurity researchers have disclosed a cross-site scripting (XSS) vulnerability in the web-based control panel used by operators of the StealC information stealer, allowing them to gather crucial insights on one of the threat actors using the malware in their operations. “By exploiting it, we were able to collect system fingerprints, monitor active sessions, and –…

SECURITY AFFAIRS MALWARE NEWSLETTER ROUND 80

Security Affairs Malware newsletter includes a collection of the best articles and research on malware in the international landscape Malware Newsletter Gogs 0-Day Exploited in the Wild SHADOW#REACTOR – Text-Only Staging, .NET Reactor, and In-Memory Remcos RAT Deployment   “Untrustworthy Fund”: targeted UAC-0190 cyberattacks against SOU using PLUGGYAPE (CERT-UA#19092)   Hiding in Plain Sight: Deconstructing the Multi-Actor…

Security Affairs newsletter Round 559 by Pierluigi Paganini – INTERNATIONAL EDITION

A new round of the weekly Security Affairs newsletter has arrived! Every week, the best security articles from Security Affairs are free in your email box. Enjoy a new round of the weekly SecurityAffairs newsletter, including the international press. Ukraine–Germany operation targets Black Basta, Russian leader wanted China-linked APT UAT-8837 targets North American critical infrastructure…

China-linked APT UAT-8837 targets North American critical infrastructure

Cisco Talos says a China-linked group, tracked as UAT-8837, has targeted North American critical infrastructure since last year. Cisco Talos reports that threat group UAT-8837, likely linked to China, has targeted critical infrastructure in North America since at least last year. The activity shows tactics overlapping with known China-linked clusters. “Cisco Talos is closely tracking…

Cisco finally patches seven-week-old zero-day flaw in Secure Email Gateway products

Better late than never. Cisco this week patched a ‘critical’ zero-day flaw in the company’s email security and management gateways that has hung over customers’ heads since December. Tracked as CVE-2025-20393, the vulnerability affects Cisco’s AsyncOS Software running on the physical or virtual Secure Email Gateway (SEG) and Secure Email and Web Manager (SEWM) products.…

CVE-2026-0227: Palo Alto Networks Fixes GlobalProtect DoS Flaw Allowing Remote Firewall Disruption

Shortly after Microsoft’s massive January Patch Tuesday release addressing the CVE-2026-20805 zero-day vulnerability in Windows Desktop Window Manager, another technology giant has issued a security fix. This time, Palo Alto Networks has warned of a high-severity flaw affecting its GlobalProtect Gateway and Portal, noting that a proof-of-concept (PoC) exploit is available. GlobalProtect is Palo Alto…

CVE-2026-0227: Palo Alto Networks Fixes GlobalProtect DoS Flaw Allowing Remote Firewall Disruption

Shortly after Microsoft’s massive January Patch Tuesday release addressing the CVE-2026-20805 zero-day vulnerability in Windows Desktop Window Manager, another technology giant has issued a security fix. This time, Palo Alto Networks has warned of a high-severity flaw affecting its GlobalProtect Gateway and Portal, noting that a proof-of-concept (PoC) exploit is available. GlobalProtect is Palo Alto…

CVE-2026-0227: Palo Alto Networks Fixes GlobalProtect DoS Flaw Allowing Remote Firewall Disruption

Shortly after Microsoft’s massive January Patch Tuesday release addressing the CVE-2026-20805 zero-day vulnerability in Windows Desktop Window Manager, another technology giant has issued a security fix. This time, Palo Alto Networks has warned of a high-severity flaw affecting its GlobalProtect Gateway and Portal, noting that a proof-of-concept (PoC) exploit is available. GlobalProtect is Palo Alto…