CVE-2026-97810
7.0HighPublished 13 Oct 2026 · NVD status: Analyzed · AI triage by gemini-3.8-flash
- Attack vector
- Local
- Complexity
- High
- Privileges needed
- Low
- User interaction
- None
- Impact
- Full C/I/A compromise
- Weakness
- CWE-122
Impact
A local attacker with standard user access can elevate privileges to SYSTEM. They need prior local credentials or code execution on the host.
Root cause
A heap-based buffer overflow flaw exists in the Windows Container Isolation FS Filter Driver (unionfs.sys).
Affected systems
Versions not listed — check the vendor advisory.
CVSS v3.1 · CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Fix & remediation
Install the official security update from Microsoft via Windows Update. No temporary workaround or interim configuration fix is documented.
AI-suggested. Run it in staging first and check it against the vendor advisory. Why?
NVD description
Heap-based buffer overflow in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to elevate privileges locally.
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-97810PatchVendor Advisory