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Tag: SharePoint

Microsoft SharePoint Has a New RCE Flaw. If You Haven’t Patched Yet, Go Do That.

A critical vulnerability, tracked as CVE-2026-45659, in Microsoft SharePoint can allow attackers to achieve remote code execution with little effort. Microsoft released security updates to patch a high-severity SharePoint vulnerability, tracked as CVE-2026-45659 (CVSS score of 8.8), that could allow remote code execution. The flaw does not require complex conditions for exploitation, making it a…

Microsoft Patches SharePoint RCE Flaw CVE-2026-45659 Across Server Versions

Microsoft has rolled out updates to fix a remote code execution vulnerability impacting SharePoint that could be exploited by bad actors in attacks without requiring any specialized conditions to be met. The vulnerability, tracked as CVE-2026-45659, carries a CVSS score of 8.8. It has been assigned an important severity. “Deserialization of untrusted data in Microsoft…

High-severity SharePoint RCE bug patched by Microsoft (CVE-2026-45659)

Microsoft has released patches for a high-severity remote code execution vulnerability (CVE-2026-45659) in SharePoint that may be exploited in low-complexity attacks. It affects the SharePoint Server Subscription Edition, SharePoint Server 2019, and SharePoint Enterprise Server 2016. About CVE-2026-45659 CVE-2026-45659 stems from Shareoint deserializing untrusted data, and may be exploited by an authenticated attacker to execute…

SharePoint On-Prem End of Life: 2026 Migration Guide

With Microsoft ending support for SharePoint Server 2016 and 2019 on July 14, 2026, organizations still running on-premises SharePoint face a shrinking window to modernize aging collaboration environments before security updates, bug fixes, and vendor support disappear. SharePoint 2019 On-Prem lives on, but without Microsoft support For over a decade, local SharePoint deployments have served…

Over 1,300 SharePoint Servers Still Exposed to Actively Exploited Spoofing Flaw

More than 1,300 internet-exposed Microsoft SharePoint servers remain unpatched against a spoofing flaw previously exploited as a zero-day. “Improper input validation in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network,” said Microsoft in its advisory. SharePoint Servers Still Exposed  The vulnerability, tracked as CVE-2026-32201, affects SharePoint Enterprise Server 2016, SharePoint…

U.S. CISA adds Microsoft SharePoint Server, and Microsoft Office Excel flaws to its Known Exploited Vulnerabilities catalog

U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds Microsoft SharePoint Server, and Microsoft Office Excel flaws to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added Apple, Laravel Livewire and Craft CMS flaws to its Known Exploited Vulnerabilities (KEV) catalog. Below are the flaws added to the catalog: CVE-2009-0238 Microsoft Office Remote…

CISA warns of active exploitation of Microsoft SharePoint vulnerability (CVE-2026-20963)

CVE-2026-20963, a remote code execution (RCE) SharePoint vulnerability Microsoft fixed in January 2026, is being exploited by attackers. The confirmation comes from the US Cybersecurity and Infrastructure Security Agency (CISA), which added the flaw to its Known Exploited Vulnerabilities (KEV) catalog on Wednesday. About CVE-2026-20963 CVE-2026-20963 affects Microsoft SharePoint Server Subscription Edition, Microsoft SharePoint Server…

U.S. CISA adds Microsoft SharePoint and Zimbra  flaws to its Known Exploited Vulnerabilities catalog

U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds SharePoint and Zimbra flaws to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added ([1, 2]) SharePoint and Zimbra flaws to its Known Exploited Vulnerabilities (KEV) catalog. Below are the flaws added to the catalog: CVE-2026-20963 (CVSS score of 8.8) – Microsoft SharePoint Deserialization…