cve 2026 50477

The cve 2026 50477 tag covers Microsoft’s fix for a Windows Kernel elevation-of-privilege vulnerability addressed in the July 14, 2026 monthly security updates. The flaw is described as a heap-based buffer overflow that could allow a local attacker to escalate limited access into deeper system compromise. Update KB5101650 applies to Windows 11 versions 24H2 and 25H2. Microsoft rated the issue Important and assigned a CVSS score of 8.8, while assessing exploitation as less likely. At release, the vulnerability had not been publicly disclosed and was not known to be exploited. Related coverage focuses on the security update and Microsoft’s vulnerability assessments.