Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to elevate priv…

High CVSS 7.0

CVECVE-2026-97787

First seen2026-10-16 11:16 UTC

Disclosed2026-10-13 19:22 UTC

Last updated2026-10-16 11:16 UTC

Channel statusauto

Summary

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to elevate privileges locally.

In-depth triage

No in-depth report has been generated yet (DR-003 v2 AI pipeline is under construction).

Affected products

Sources

NVD DATABASE

Original Links

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-97787 Patch

Timeline

2026-10-16 nvd_ingest NVD