Excel Vulnerability
The latest Excel Vulnerability coverage — news, analysis, and updates from the WindowsNews.AI desk.
Patch Alert: Excel Vulnerability CVE-2026-55131 Lets Attackers Hijack PCs Via Simple File Open
Microsoft’s security team dropped a critical Office update on July 14, 2026 that every Excel user needs to install immediately. The patch addresses CVE-2026-55131, a heap buffer overflow...
Microsoft Patches Excel Remote Code Flaw CVE-2026-55137—Here’s What You Need to Do Now
On July 14, 2026, Microsoft shipped security updates that close a heap-based buffer overflow in Excel that lets attackers hijack computers through booby-trapped spreadsheets. The vulnerability,...
CVE-2026-44823: Critical Excel RCE Leaves Mac Office Users Waiting for Patch
Microsoft’s June 2026 Patch Tuesday brought a critical security advisory that Excel users on Mac cannot ignore—and cannot patch. The vulnerability, tracked as CVE-2026-44823, is a remote code...
Excel Copilot Agent Vulnerability CVE-2026-26144: Zero-Click Data Exfiltration Threat Patched in March 2026 Update
Microsoft's March 10, 2026 Patch Tuesday addressed a critical security vulnerability that demonstrates how legacy flaw classes gain dangerous new capabilities when combined with modern AI assistants....
CVE-2026-26109: Microsoft Excel's Remote Delivery, Local Execution Vulnerability Explained
Microsoft's security advisory for CVE-2026-26109 describes it as a "Microsoft Excel Remote Code Execution Vulnerability" while simultaneously listing the attack vector as "Local" in its CVSS...
CVE-2026-26112: Microsoft's Excel Vulnerability Classification Sparks Security Confusion
Microsoft's March 2026 security advisory for CVE-2026-26112 labels the flaw as a \"Microsoft Excel Remote Code Execution Vulnerability,\" but the accompanying CVSS vector tells a different story. The...
Excel CVE-2026-26144 XSS Vulnerability Enables Copilot Data Exfiltration in Zero-Click Attack
Microsoft's March 2026 Patch Tuesday addressed a critical Excel vulnerability that creates a dangerous new attack vector for AI-powered data theft. CVE-2026-26144, a cross-site scripting flaw in...
Microsoft Patches Excel Information-Disclosure Bug: Why It’s More Dangerous Than It Sounds
Microsoft’s first 2026 security update fixes an Excel vulnerability that attackers could exploit to read sensitive data from a computer’s memory. The flaw, tracked as CVE-2026-21258, was...
CVE-2026-20956: Why Microsoft’s Latest Excel Patch Is More Urgent Than Its CVSS Score Suggests
Microsoft has patched a critical vulnerability in Excel that, at first glance, seems to send mixed signals: the advisory headline screams “Remote Code Execution,” yet the CVSS severity vector...
Excel RCE CVE-2025-62560: The ‘Local’ Attack Vector That’s Still Dangerous
Microsoft has published a critical advisory for a remote code execution vulnerability in Excel, tracked as CVE-2025-62560, with a CVSS base score of 7.8. The company warns that an attacker can craft...
CVE vs CVSS Discrepancy: Understanding Microsoft Excel's Remote Execution Vulnerability
Microsoft's recent security advisory for CVE-2025-62561 has sparked confusion among security professionals and Windows users alike. The vulnerability is officially labeled as a \"Microsoft Excel...
CVE-2025-62563: Excel Remote Code Execution Vulnerability Analysis & Protection Guide
Microsoft's latest security advisory for CVE-2025-62563 reveals a critical remote code execution vulnerability affecting Microsoft Excel that has security professionals and Windows administrators on...