VDB
CVE-2026-40402
CVE-2026-40402
PUBLISHED
CVSS 9.300000190734863 CRITICAL
Use after free in Windows Hyper-V allows an unauthorized attacker to elevate privileges locally.
EPSS 0.06% · 18.2th percentile
Risk Scores
CVSS 3.1
9.300000190734863
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C
EPSS Score
0.06%
18.2th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| microsoft | windows_server_2022 | 10.0.20348.0, 10.0.20348.0, 10.0.20348.0 |
| Microsoft | Windows Server 2022 | 10.0.20348.0, 10.0.20348.0, 10.0.20348.0 |
| Microsoft | Windows 11 version 22H3 | 10.0.22631.0, 10.0.22631.0, 10.0.22631.0 |
| microsoft | windows_11_23H2 | 10.0.22631.0, 10.0.22631.0, 10.0.22631.0 |
| Microsoft | Windows 11 Version 23H2 | 10.0.22631.0, 10.0.22631.0, 10.0.22631.0 |
Timeline
- May 12, 2026 CVE Published
- May 12, 2026 PoC Published
- May 12, 2026 PoC Published
- May 13, 2026 PoC Published
- May 13, 2026 PoC Published
- May 13, 2026 Security Advisory
- May 13, 2026 Security Advisory
- May 13, 2026 Security Advisory
- May 13, 2026 Security Advisory
- May 13, 2026 Security Advisory
- May 13, 2026 Security Advisory
- May 13, 2026 Security Advisory
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40407 advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-35418 advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-34345 advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32209 advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-35422 advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-34330 advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32170 advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-34350 advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40401 advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-35415 advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40415 advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40397 advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-34333 advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40406 advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-34339 advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-34334 advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41088 advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-35419 advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-34332 advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-34351 advisory
…and 53 more