High severity7.8NVD Advisory· Published Aug 11, 2026· Updated Aug 11, 2026
CVE-2026-66807
CVE-2026-66807
Description
Stack-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
Affected products
1Patches
Vulnerability mechanics
References
1News mentions
1- Microsoft Patch Tuesday Update August 2026 – 394 Vulnerabilities Fixed, Including 3 Zero-DaysCyber Security News · Aug 11, 2026