Medium
Windows Container Isolation FS Filter Driver (unionfs.sys) Tampering Vulnerability
Improper link resolution before file access ('link following') in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to perform tampering locally.
Announced Group revision 1
Original source ↗CVE-2026-72971
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-72971
Windows 11 version 26H1
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "Microsoft",
"product": "Windows 11 version 26H1",
"versions": [
{
"status": "affected",
"version": "10.0.28000.0",
"lessThan": "10.0.28000.2704",
"versionType": "custom"
}
],
"platforms": [
"ARM64-based Systems",
"x64-based Systems"
]
}
]- Related CVEs
- CVE-2026-72971
Source reference:
/cveMetadata/cveId
Publisher severity
medium
Source reference: /containers/cna/metrics
- Event
- #49755 · Revision 1
- Added to Heist Feed
- Publisher date