CVSS 3.1
7.0 highCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:HCVE-2026-112753 Windows Container Isolation FS Filter Driver (unionfs.sys) Elevation of Privilege Vulnerability
High (7.0) in microsoft windows 11 version 26h1. EPSS 0.3% estimated probability of exploitation activity in the next 30 days.
Access of resource using incompatible type ('type confusion') in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to elevate privileges locally.
Severity
- EPSS
- 0.3% estimated probability of exploitation activity in the next 30 days; 24th percentile. Scored 2026-11-13. A forecast for this CVE across the internet, not for your own systems.
- CISA's assessment (SSVC)
- Exploitation: none · Automatable: no · Technical impact: total, assessed 2026-11-10. From CISA's Vulnrichment in the CVE List: whether it is exploited, whether exploiting it can be automated, and how much control it gives.
- CWE
- CWE-843 Access of Resource Using Incompatible Type (Type Confusion)
- Published
- Modified
- Assigned by
- microsoft (CNA)
- NVD analysis
- Awaiting analysis
- Record from
- the NVD, synced
Ask an AI about this CVE
Show the prompt
Explain CVE-2026-112753 for an engineer deciding whether to act. Use https://cve.bz/api/public/cves/CVE-2026-112753?via=ask-ai-copy and https://cve.bz/cve/CVE-2026-112753?via=ask-ai-copy as the source of truth: what is affected and which versions fix it, whether it is in CISA KEV, public exploits, and its EPSS (an internet-wide 30-day estimate of exploitation activity, not a forecast for my systems). If they give no fixed versions, use the CVE record https://cveawg.mitre.org/api/cve/CVE-2026-112753 or the vendor advisory, not third-party mirrors. Tell me how to check whether I am affected and how to verify a fix. Cite the sources and say where they are uncertain.Opens a third-party assistant; its answer is its own, not cve.bz's. The prompt holds only this CVE's id and public links.
Badge for a README or a site
An image that stays current: it is drawn from the data each time it is fetched (a host that proxies images, as GitHub does, may show its copy for a while). Markdown:
[](https://cve.bz/cve/CVE-2026-112753)
HTML:
<a href="https://cve.bz/cve/CVE-2026-112753"><img src="https://cve.bz/cve/badge/CVE-2026-112753.svg" alt="CVE-2026-112753"></a>
Affected
- microsoft:windows 11 version 26h1
Versions
From the CNA's record in the CVE List.
| Product | Affected |
|---|---|
| Microsoft Windows 11 version 26H1 | from 10.0.28000.0 before 10.0.28000.3501 |