Windows Container Isolation FS Filter Driver (unionfs.sys) Tampering Vulnerability
view advisory published 2026-08-11
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle
01
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2026-72971US | — | — | ||
Improper link resolution before file access ('link following') in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to perform tampering loca… | ||||
02
references
External citations — patches, advisories, analysis.
- CVE-2026-72971 Windows Container Isolation FS Filter Driver (unionfs.sys) Tampering Vulnerability - CSAFself
- CVE-2026-72971 Windows Container Isolation FS Filter Driver (unionfs.sys) Tampering Vulnerability - HTMLself
- Microsoft Support Lifecycleexternal
- Common Vulnerability Scoring Systemexternal
- Microsoft Exploitability Indexexternal
03
remediations (2)
- FixedWindows 11 Version 26H1 for ARM64-based Systems
10.0.28000.2704:Security Update:https://support.microsoft.com/help/5121000
https://support.microsoft.com/help/5121000 - FixedWindows 11 version 26H1 for x64-based Systems
10.0.28000.2704:Security Update:https://support.microsoft.com/help/5121000
https://support.microsoft.com/help/5121000
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