Microsoft Excel
The latest Microsoft Excel coverage — news, analysis, and updates from the WindowsNews.AI desk.
Stop That Spreadsheet: Microsoft Fixes Excel's Memory Leak in July 2026 Update
On July 14, 2026, Microsoft released a critical security patch for multiple versions of Excel, closing a vulnerability that allows attackers to read sensitive data from a computer’s memory simply...
Excel Security Alert: That 7.8-Rated Memory Bug Is Not a Network Attack, But You Must Patch Now (CVE-2026-47642)
Microsoft’s July 2026 Patch Tuesday delivered a fix for a use-after-free vulnerability in Excel that, if exploited, gives an attacker the keys to your system. The flaw, designated CVE-2026-47642,...
Microsoft Patches Excel Flaw CVE-2026-58618 That Could Allow Remote Code Execution via Malicious Files
On July 14, 2026, Microsoft rolled out a critical security fix for a vulnerability in Excel that could let attackers take over your computer just by tricking you into opening a booby-trapped...
High-Severity CVE-2026-55948: Excel Workbook Flaw Demands Quick Patch
Microsoft on July 14, 2026 detailed CVE-2026-55948, a use-after-free vulnerability in Microsoft Office Excel that carries a CVSS 3.1 score of 7.8. An attacker who crafts a malicious workbook can...
Excel Patch for July 2026 Closes Remote Code Execution Hole Exploited via Malicious Files
On July 14, 2026, Microsoft released a security update for Microsoft Excel that fixes a vulnerability allowing attackers to run arbitrary code on a victim’s machine simply by having them open a...
CVE-2026-54988: Microsoft's Excel Update Fixes Data Leak and Crash Flaw
On July 14, Microsoft released a security update for Microsoft Office Excel that patches a memory-read vulnerability rated Medium severity. Despite the modest score, the flaw can crash Excel or cause...
Microsoft Deploys Fix for Excel Heap Overflow That Can Crash Apps and Expose Data
Microsoft shipped a security update on July 14, 2026, that plugs a heap-based buffer overflow in Excel capable of leaking information and abruptly terminating the application when a user opens a...
Microsoft Patches Excel Flaw That Turns a Simple Spreadsheet into a Backdoor
Microsoft issued a security fix on July 14, 2026, for a flaw in Excel that can give attackers full control of a PC when a victim opens a poisoned spreadsheet. The vulnerability, tracked as...
Excel Copilot Gains Multi-Agent Web Smarts: General Availability Set for July 2026
Microsoft has quietly added a landmark entry to its Microsoft 365 roadmap that promises to transform Excel from a static number cruncher into a dynamic research assistant. Roadmap ID 566872, posted...
Teton High’s Ethan Strayer Clinches 2026 U.S. Microsoft Excel Nationals Crown
Ethan Strayer, a rising senior at Teton High School in Driggs, Idaho, has been named the 2026 U.S. champion in Microsoft Excel for Microsoft 365 Apps at Certiport’s Microsoft Office Specialist U.S....
Excel's Copilot Gets Personal: June 2026 Update Introduces Persistent Formatting and Output Preferences
Microsoft is giving Excel users a long-awaited quality-of-life upgrade: Copilot will now remember how you like your data presented. In a June 2026 update rolling out to Microsoft 365 subscribers,...
Microsoft Copilot in Excel Introduces Reusable AI Skills and Live Financial Data Streams
Microsoft today rolled out a significant update to Copilot in Excel, bringing a trio of powerful new capabilities to Microsoft 365 Copilot subscribers: reusable Skills, direct financial data...