High severity7.8NVD Advisory· Published May 12, 2026· Updated May 13, 2026
CVE-2026-40359
CVE-2026-40359
Description
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
1News mentions
1- Microsoft May 2026 Patch Tuesday fixes 120 flaws, no zero-daysBleepingComputer · May 12, 2026