CVE-2026-81389
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
- Published Sep 8, 2026
- CVSS 7.0 high
- 0.4% chance of exploitation in the next 30 days (EPSS)
- A fix is available
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.