High severity8.1NVD Advisory· Published May 12, 2026· Updated May 15, 2026
CVE-2026-40415
CVE-2026-40415
Description
Use after free in Windows TCP/IP allows an unauthorized attacker to execute code over a network.
Patches
Vulnerability mechanics
References
1- msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40415nvdVendor Advisory
News mentions
3- Patch Tuesday - May 2026Rapid7 Blog · May 13, 2026
- Defense at AI speed: Microsoft’s new multi-model agentic security system tops leading industry benchmarkMicrosoft Security Blog · May 12, 2026
- Microsoft May 2026 Patch Tuesday fixes 120 flaws, no zero-daysBleepingComputer · May 12, 2026