CVE-2026-40402
CVE-2026-40402: 1 tracked advisory record across MS Server. Compare vendor sources and published fix guidance.
Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.
Vendor advisory comparison
MS Server
1 advisory- Advisory severityCritical9.3
Critical [CVE-2026-40402] Windows Hyper-V Elevation of Privilege Vulnerability
CVE-2026-40402Source published Source updated
Use after free in Windows Hyper-V allows an unauthorized attacker to elevate privileges locally. Affected product named by the advisory: Windows Server 2022.
- Affected products in this advisory
- Windows Server 2022
- Source-reported affected versions
- Windows 11 version 23H2 10.0.22631.0 before 10.0.22631.7079
- Windows 11 Version 23H2 10.0.22631.0 before 10.0.22631.7219
- Windows Server 2022 10.0.20348.0 before 10.0.20348.5139
- Source-reported fixed versions
- 10.0.22631.7079
- 10.0.22631.7219
- 10.0.20348.5139
- Mitigation guidance
- No mitigation guidance extracted; consult the source.
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