VDB
msrc_CVE-2026-40401
msrc_CVE-2026-40401
PUBLISHED
CVSS 7.099999904632568 HIGH
Risk Scores
CVSS 3.1
7.099999904632568
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Windows 10 Version 1809 for x64-based Systems 10.0.17763.8755 | ||
| Windows 11 Version 25H2 for ARM64-based Systems <10.0.26200.8457 | ||
| Windows Server 2022 10.0.20348.5139 | ||
| Windows 11 Version 25H2 for ARM64-based Systems 10.0.26200.8457 | ||
| Windows Server 2025 (Server Core installation) 10.0.26100.32860 | ||
| Windows Server 2022 (Server Core installation) <10.0.20348.5139 | ||
| Windows 10 Version 1809 for x64-based Systems <10.0.17763.8755 | ||
| Windows 10 Version 21H2 for x64-based Systems <10.0.19044.7291 | ||
| Windows Server 2019 (Server Core installation) 10.0.17763.8755 | ||
| Windows Server 2022 <10.0.20348.5139 | ||
| Windows 10 Version 22H2 for x64-based Systems <10.0.19045.7291 | ||
| Windows Server 2022 (Server Core installation) 10.0.20348.5139 | ||
| Windows Server 2019 <10.0.17763.8755 | ||
| Windows 10 Version 22H2 for x64-based Systems 10.0.19045.7291 | ||
| Windows 11 Version 25H2 for x64-based Systems <10.0.26200.8457 | ||
| Windows Server 2025 (Server Core installation) <10.0.26100.32860 | ||
| Windows 10 Version 21H2 for x64-based Systems 10.0.19044.7291 | ||
| Windows Server 2019 10.0.17763.8755 | ||
| Windows Server 2019 (Server Core installation) <10.0.17763.8755 | ||
| Windows 11 Version 25H2 for x64-based Systems 10.0.26200.8457 |
Exploit Intelligence
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40401 (circl)
- https://msrc.microsoft.com/csaf/advisories/2026/msrc_cve-2026-40401.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/5087538 (circl)
- https://support.microsoft.com/help/5087545 (circl)
- https://support.microsoft.com/help/5087424 (circl)
- https://support.microsoft.com/help/5087544 (circl)
- https://support.microsoft.com/help/5087539 (circl)
…and 9 more exploits
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-2026-40401 advisory
- https://msrc.microsoft.com/csaf/advisories/2026/msrc_cve-2026-40401.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/5087538 fix
- https://support.microsoft.com/help/5087545 fix
- https://support.microsoft.com/help/5087424 fix
- https://support.microsoft.com/help/5087544 fix
- https://support.microsoft.com/help/5087539 fix
- https://support.microsoft.com/help/5087423 fix
- https://support.microsoft.com/help/5089549 fix
- https://support.microsoft.com/help/5089466 fix
- https://support.microsoft.com/help/5087420 fix
- https://support.microsoft.com/help/5087541 fix
- https://support.microsoft.com/help/5089548 fix
- https://support.microsoft.com/help/5087537 fix
- https://support.microsoft.com/help/5087470 fix
- https://support.microsoft.com/help/5087471 fix