CVE-2026-113771: Windows Container Isolation FS Filter Driver (unionfs.sys) Elevation of Privilege Vulnerability
Microsoft · Windows 11 version 26H1
Vendor fix available · Affected: Microsoft Windows 11 version 26H1 · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 34% of scored CVEs
DescriptionCVE.org
Off-by-one error in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to elevate privileges locally.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- Microsoft · Windows 11 version 26H1from 10.0.28000.0 before 10.0.28000.3501
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- Microsoft
- Published
- November 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-113771 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.