VDB
msrc_CVE-2026-40402
msrc_CVE-2026-40402
PUBLISHED
CVSS 9.300000190734863 CRITICAL
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
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Windows 11 Version 23H2 for x64-based Systems <10.0.22631.7079 | ||
| Windows 11 Version 23H2 for ARM64-based Systems 10.0.22631.7079 | ||
| Windows Server 2022 (Server Core installation) <10.0.20348.5139 | ||
| Windows Server 2022 (Server Core installation) 10.0.20348.5139 | ||
| Windows 11 Version 23H2 for ARM64-based Systems <10.0.22631.7079 | ||
| Windows Server 2022 10.0.20348.5139 | ||
| Windows Server 2022 <10.0.20348.5139 | ||
| Windows 11 Version 23H2 for x64-based Systems 10.0.22631.7079 |
Exploit Intelligence
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40402 (circl)
- https://msrc.microsoft.com/csaf/advisories/2026/msrc_cve-2026-40402.json (circl)
- https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1 (circl)
- https://support.microsoft.com/lifecycle (circl)
- https://www.first.org/cvss (circl)
- https://support.microsoft.com/help/5087545 (circl)
- https://support.microsoft.com/help/5087424 (circl)
- https://support.microsoft.com/help/5087420 (circl)
Timeline
- May 12, 2026 CVE Published
- May 13, 2026 Security Advisory
- May 13, 2026 Security Advisory
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40402 advisory
- https://msrc.microsoft.com/csaf/advisories/2026/msrc_cve-2026-40402.json advisory
- https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1 url
- https://support.microsoft.com/lifecycle url
- https://www.first.org/cvss url
- https://support.microsoft.com/help/5087545 fix
- https://support.microsoft.com/help/5087424 fix
- https://support.microsoft.com/help/5087420 fix