Office Security Updates
The latest Office Security Updates coverage — news, analysis, and updates from the WindowsNews.AI desk.
PowerPoint Flaw CVE-2026-55123: What Makes This Patch Different and Why You Need It Now
Microsoft’s July 2026 Patch Tuesday includes a fix for a memory corruption bug in PowerPoint that attackers can exploit just by convincing you to open a specially crafted presentation. The...
Opening a Crafted Document Could Leak Your Data—Microsoft’s July 14 Office Update Fixes It
On July 14, 2026, Microsoft pushed out security updates for Office that close CVE-2026-55042, a vulnerability that lets attackers extract sensitive information by tricking you into opening a...
Microsoft Fixes Office Flaw That Could Hack Your PC Just by Previewing a File
Microsoft’s July 2026 security update closes a critical remote code execution hole in Office that can be exploited simply by previewing a document—no double-click required. The vulnerability,...
Urgent Office Update Closes Door on Document-Based Attacks That Could Let Hackers Hijack Your PC
On July 14, 2026, Microsoft released a critical batch of security updates for Microsoft Office, addressing a vulnerability that could allow attackers to take complete control of a system simply by...
Critical Excel Remote Code Execution Flaw Fixed in Microsoft's July Patch Tuesday
On July 14, 2026, Microsoft released its monthly security updates for Office, closing a serious hole in Excel that an attacker could use to take over a computer simply by tricking someone into...
Microsoft Fixes Excel Remote Code Execution Flaw (CVE-2026-55037): What You Need to Patch
Microsoft shipped its July 2026 Office security updates on July 14, and standing chief among them is a patch for a critical Excel vulnerability that lets attackers execute arbitrary code on a...
Patch Now: Microsoft Excel’s July Update Closes a Stealthy Memory Leak (CVE-2026-55054)
On July 14, 2026, Microsoft pushed a fix for a vulnerability that lets attackers quietly read sensitive data from your PC’s memory—just by having you open a poisoned Excel workbook. Tracked as...
Microsoft Word Data Leak Flaw Fixed, But Advisory Error Could Cause Patching Confusion
On July 14, 2026, Microsoft released a security update for a vulnerability in Word that could allow an attacker to read confidential information from a victim’s computer. The patch is...
Microsoft Fixes Excel Data Exposure Flaw—Update Now to Prevent Information Leaks
On July 14, 2026, Microsoft released a security update for Microsoft Excel that patches a vulnerability capable of silently leaking sensitive data from your spreadsheets. The flaw, identified as...
Microsoft Fixes Office RCE Bug CVE-2026-55017 — Update Now to Block Document-Based Attacks
Microsoft on July 14, 2026 released its monthly security rollup for Office, addressing a critical vulnerability that could let attackers run malicious code on your PC simply by tricking you into...
Microsoft 365 on Windows 10: Security Patches Until 2028, But No New Features
Microsoft 365 apps on Windows 10 will stop receiving feature updates as of October 14, 2025, the same day the operating system itself hits end of support. But Word, Excel, Outlook, PowerPoint,...
CVE-2026-40367: Patch All Office Apps, Not Just Word, Microsoft Warns
Microsoft’s May 12, 2026 security updates addressed a critical remote code execution vulnerability in Microsoft Word tracked as CVE-2026-40367, but the patch deployment is unlike a typical Office...