CVE-2026-102211

CVE-2026-102211 is a use-after-free flaw (also associated with a race condition) in Windows Virtualization-Based Security (VBS) Enclave. An attacker who is already authorized locally can trigger the bug to elevate privileges on the same system; attack complexity is high, no user interaction is required, and the impact is high for confidentiality, integrity, and availability. It affects Microsoft Windows systems that include the vulnerable VBS Enclave component; exact build ranges were not stated in the source data and the issue was covered in October 2026 Patch Tuesday reviews. It is not listed in CISA's Known Exploited Vulnerabilities catalog, and no public proof-of-concept is known.

What to do: Apply Microsoft's October 2026 security updates for Windows as soon as they are available for your builds. Prioritize systems where low-privileged local users are not fully trusted, especially those with Virtualization-Based Security enabled. There is no public workaround in the source data; patching is the concrete fix.