Medium severity4.3NVD Advisory· Published May 12, 2026· Updated May 16, 2026
CVE-2026-40421
CVE-2026-40421
Description
External control of file name or path in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
1- msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40421nvdVendor Advisory
News mentions
1- Microsoft May 2026 Patch Tuesday fixes 120 flaws, no zero-daysBleepingComputer · May 12, 2026