Right after Microsoft disclosed an actively exploited Office zero-day (CVE-2026-21509) on January 26, 2026, CERT-UA reported UAC-0001 (APT28) leveraging the vulnerability in the wild. The russia-backed threat actor targeted organizations in Ukraine and the EU with malicious Office documents, and metadata shows one sample was created on January 27 at 07:43 UTC, illustrating the rapid…
Tag: Microsoft
AI, Apps, APT28, Blog, CERT-UA, CVE-2026-21509, CVEs, Cybersecurity, Europe, Exploits, Global Security News, Government & Policy, Network Security, Russia
UAC-0001 (APT28) Attack Detection: russia-Backed Actor Actively Exploits CVE-2026-21509 Targeting Ukraine and the EU
Right after Microsoft disclosed an actively exploited Office zero-day (CVE-2026-21509) on January 26, 2026, CERT-UA reported UAC-0001 (APT28) leveraging the vulnerability in the wild. The russia-backed threat actor targeted organizations in Ukraine and the EU with malicious Office documents, and metadata shows one sample was created on January 27 at 07:43 UTC, illustrating the rapid…
Advanced (300), AI, APAC, Apps, Endpoint, Global Security News, How To, How-to guides, Network Security, Risk Management, Uncategorized
Explore scaling options for AWS Directory Service for Microsoft Active Directory
You can use AWS Directory Service for Microsoft Active Directory as your primary Active Directory Forest for hosting your users’ identities. Your IT teams can continue using existing skills and applications while your organization benefits from the enhanced security, reliability, and scalability of AWS managed services. You can also run AWS Managed Microsoft AD as…
AI, Apps, Blog, CVE, CVE-2025-15467, CVEs, Cybersecurity, Exploits, Global Security News, privacy, Risk Management, vulnerability
CVE-2025-15467: OpenSSL Vulnerability Leads to Denial-of-Service, Remote Code Execution
Just as organizations were working to patch the Microsoft Office zero-day (CVE-2026-21509), the cybersecurity world is confronted with another serious threat. OpenSSL disclosed a high-severity stack buffer overflow issue that can trigger denial-of-service (DoS) conditions and, under specific circumstances, enable remote code execution (RCE). Tracked as CVE-2025-15467, the vulnerability was promptly patched by the vendor…
AI, Apps, Blog, CVE, CVE-2025-15467, CVEs, Cybersecurity, Exploits, Global Security News, privacy, Risk Management, vulnerability
CVE-2025-15467: OpenSSL Vulnerability Leads to Denial-of-Service, Remote Code Execution
Just as organizations were working to patch the Microsoft Office zero-day (CVE-2026-21509), the cybersecurity world is confronted with another serious threat. OpenSSL disclosed a high-severity stack buffer overflow issue that can trigger denial-of-service (DoS) conditions and, under specific circumstances, enable remote code execution (RCE). Tracked as CVE-2025-15467, the vulnerability was promptly patched by the vendor…
AI, Apps, Blog, CVE, CVE-2025-15467, CVEs, Cybersecurity, Exploits, Global Security News, privacy, Risk Management, vulnerability
CVE-2025-15467: OpenSSL Vulnerability Leads to Denial-of-Service, Remote Code Execution
Just as organizations were working to patch the Microsoft Office zero-day (CVE-2026-21509), the cybersecurity world is confronted with another serious threat. OpenSSL disclosed a high-severity stack buffer overflow issue that can trigger denial-of-service (DoS) conditions and, under specific circumstances, enable remote code execution (RCE). Tracked as CVE-2025-15467, the vulnerability was promptly patched by the vendor…
AI, Apps, Blog, CVE, CVE-2025-15467, CVEs, Cybersecurity, Exploits, Global Security News, privacy, Risk Management, vulnerability
CVE-2025-15467: OpenSSL Vulnerability Leads to Denial-of-Service, Remote Code Execution
Just as organizations were working to patch the Microsoft Office zero-day (CVE-2026-21509), the cybersecurity world is confronted with another serious threat. OpenSSL disclosed a high-severity stack buffer overflow issue that can trigger denial-of-service (DoS) conditions and, under specific circumstances, enable remote code execution (RCE). Tracked as CVE-2025-15467, the vulnerability was promptly patched by the vendor…
AI, Apps, Blog, CVE, CVE-2025-15467, CVEs, Cybersecurity, Exploits, Global Security News, privacy, Risk Management, vulnerability
CVE-2025-15467: OpenSSL Vulnerability Leads to Denial-of-Service, Remote Code Execution
Just as organizations were working to patch the Microsoft Office zero-day (CVE-2026-21509), the cybersecurity world is confronted with another serious threat. OpenSSL disclosed a high-severity stack buffer overflow issue that can trigger denial-of-service (DoS) conditions and, under specific circumstances, enable remote code execution (RCE). Tracked as CVE-2025-15467, the vulnerability was promptly patched by the vendor…
AI, Apps, Blog, CVE, CVE-2025-15467, CVEs, Cybersecurity, Exploits, Global Security News, privacy, Risk Management, vulnerability
CVE-2025-15467: OpenSSL Vulnerability Leads to Denial-of-Service, Remote Code Execution
Just as organizations were working to patch the Microsoft Office zero-day (CVE-2026-21509), the cybersecurity world is confronted with another serious threat. OpenSSL disclosed a high-severity stack buffer overflow issue that can trigger denial-of-service (DoS) conditions and, under specific circumstances, enable remote code execution (RCE). Tracked as CVE-2025-15467, the vulnerability was promptly patched by the vendor…
AI, Apps, Blog, CVE, CVE-2025-15467, CVEs, Cybersecurity, Exploits, Global Security News, privacy, Risk Management, vulnerability
CVE-2025-15467: OpenSSL Vulnerability Leads to Denial-of-Service, Remote Code Execution
Just as organizations were working to patch the Microsoft Office zero-day (CVE-2026-21509), the cybersecurity world is confronted with another serious threat. OpenSSL disclosed a high-severity stack buffer overflow issue that can trigger denial-of-service (DoS) conditions and, under specific circumstances, enable remote code execution (RCE). Tracked as CVE-2025-15467, the vulnerability was promptly patched by the vendor…
Global Security News
Microsoft Office vulnerability (CVE-2026-21509) in active exploitation
Categories: Threat Research Tags: Microsoft Office, vulnerability, advisory
Global Security News
Microsoft Office vulnerability (CVE-2026-21509) in active exploitation
Categories: Threat Research Tags: Microsoft Office, vulnerability, advisory
Global Security News
Microsoft Office vulnerability (CVE-2026-21509) in active exploitation
Categories: Threat Research Tags: Microsoft Office, vulnerability, advisory
Global Security News
Microsoft Office vulnerability (CVE-2026-21509) in active exploitation
Categories: Threat Research Tags: Microsoft Office, vulnerability, advisory
Global Security News
Microsoft Office vulnerability (CVE-2026-21509) in active exploitation
Categories: Threat Research Tags: Microsoft Office, vulnerability, advisory
AI, API security, Cybersecurity, Endpoint, Exploits, Global Security News, malware, Network Security, Risk Management
When your AI Assistant Becomes the Attacker’s Command-and-Control
Earlier this month, Microsoft uncovered SesameOp, a new backdoor malware that abuses the OpenAI Assistants API as a covert command-and-control (C2) channel. The discovery has drawn significant attention within the cybersecurity community. Security teams can no longer focus solely on endpoint malware. Attackers are weaponizing public and legitimate AI assistant APIs and defenders must adjust.…