Office Security
The latest Office Security coverage — news, analysis, and updates from the WindowsNews.AI desk.
Don't Open That Spreadsheet: CVE-2025-60726 Gives Attackers a Silent Memory Peek in Excel
Microsoft has quietly posted a security advisory for a new vulnerability in Excel that could let attackers secretly read the contents of your computer’s memory. The bug, cataloged as...
Microsoft Defender Application Guard for Office Retirement: Timeline and Security Implications
Microsoft has announced the retirement of Microsoft Defender Application Guard (MDAG) for Office from Microsoft 365 desktop applications, marking a significant shift in the company's enterprise...
October 2025 Patch Tuesday: Critical Office RCE Fixes and WSUS Security Updates
Microsoft's October 2025 Patch Tuesday has arrived with critical security updates that demand immediate attention from enterprise IT teams and Office users worldwide. The October 14, 2025 security...
Understanding Remote Delivery vs Local Execution in Office CVEs: A Security Analysis
The distinction between remote delivery and local execution in Microsoft Office CVEs represents one of the most misunderstood aspects of modern cybersecurity vulnerability assessment. When security...
CVE-2025-59225 Analysis: Understanding RCE vs Local AV Security Risks
Microsoft's recent disclosure of CVE-2025-59225 has created confusion among security professionals and Windows administrators due to what appears to be contradictory information in the vulnerability...
CVE-2025-59224: Understanding Excel's Remote Delivery vs Local Execution Vulnerability
Microsoft's recent security advisory for CVE-2025-59224 has created significant confusion among security professionals and Excel users alike. The vulnerability, officially classified as a \"Remote...
CVE-2025-59236: Critical Excel Use-After-Free Vulnerability Patched
Microsoft has urgently addressed a high-severity security vulnerability in Excel that could allow attackers to execute arbitrary code on affected systems. CVE-2025-59236, classified as a...
Microsoft's September Patch Tuesday: 86 Fixes, Yet Zero-Day Questions Remain
Microsoft shipped 86 security patches on September 9, 2025, addressing a sprawling set of vulnerabilities in Windows, Office, SQL Server, and other platforms. Yet only hours after the release, a...
Microsoft’s September Patch Tuesday Combats Office RCEs and Preview Pane Exploits with 80+ Fixes
Microsoft’s September 9, 2025 Patch Tuesday release delivers over 80 security fixes, but a cluster of critical Office remote code execution (RCE) vulnerabilities—some exploitable through document...
Critical Office Heap Overflow (CVE-2025-54910) Patched for Windows, Mac Fixes Still Pending
Microsoft has released security updates to patch a critical heap-based buffer overflow in Microsoft Office, tracked as CVE-2025-54910, that could allow attackers to execute arbitrary code after a...
Microsoft Patches Critical Excel Heap Overflow (CVE-2025-54900) – What You Need to Know
Microsoft has released a security update patching a critical heap‑based buffer overflow in Excel, tracked as CVE‑2025‑54900, that could allow attackers to execute code on a victim’s machine...
CVE-2025-55243: OfficePlus Spoofing Flaw Exposes Data, Bypasses Scanners
Microsoft has published a security advisory for CVE-2025-55243, a spoofing vulnerability in Microsoft OfficePlus that can lead to the exposure of sensitive information and enable attackers to...