CVE-2026-119921

Name of the Vulnerable Software and Affected Versions Windows Microsoft Account Sign-in Assistant (affected versions not specified)

Description A heap-based buffer overflow occurs in the Windows Microsoft Account Sign-in Assistant. This issue allows an authorized attacker to elevate privileges locally on the system. A heap-based buffer overflow is a memory corruption error that happens when a program writes more data to a heap-allocated buffer than it can hold.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.