VDB
msrc_CVE-2025-21420
msrc_CVE-2025-21420
PUBLISHED
CVSS 7.800000190734863 HIGH
Risk Scores
CVSS v3.1
7.800000190734863
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Windows Server 2019 (Server Core installation) <10.0.17763.6893 | ||
| Windows 11 Version 22H2 for x64-based Systems 10.0.22621.4890 | ||
| Windows 11 Version 22H2 for x64-based Systems <10.0.22621.4890 | ||
| Windows 11 Version 22H2 for ARM64-based Systems 10.0.22621.4890 | ||
| Windows 10 Version 22H2 for ARM64-based Systems <10.0.19045.5487 | ||
| Windows 10 Version 22H2 for x64-based Systems <10.0.19045.5487 | ||
| Windows 10 Version 21H2 for ARM64-based Systems <10.0.19044.5487 | ||
| Windows 10 Version 21H2 for x64-based Systems 10.0.19044.5487 | ||
| Windows Server 2022 <10.0.20348.3207 | ||
| Windows Server 2022 (Server Core installation) 10.0.20348.3207 | ||
| Windows Server 2019 <10.0.17763.6893 | ||
| Windows 10 Version 22H2 for ARM64-based Systems 10.0.19045.5487 | ||
| Windows 11 Version 22H2 for ARM64-based Systems <10.0.22621.4890 | ||
| Windows Server 2019 (Server Core installation) 10.0.17763.6893 | ||
| Windows Server 2022 10.0.20348.3207 | ||
| Windows Server 2019 10.0.17763.6893 | ||
| Windows 10 Version 21H2 for x64-based Systems <10.0.19044.5487 | ||
| Windows 10 Version 21H2 for ARM64-based Systems 10.0.19044.5487 | ||
| Windows Server 2022 (Server Core installation) <10.0.20348.3207 | ||
| Windows 10 Version 22H2 for x64-based Systems 10.0.19045.5487 |
Timeline
- Feb 11, 2025 CVE Published
- Apr 1, 2026 Security Advisory
- Apr 1, 2026 Security Advisory
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21420 advisory
- https://msrc.microsoft.com/csaf/advisories/2025/msrc_cve-2025-21420.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/5051979 fix
- https://support.microsoft.com/help/5052106 fix
- https://support.microsoft.com/help/5052000 fix
- https://support.microsoft.com/help/5051974 fix
- https://support.microsoft.com/help/5051989 fix
- https://support.microsoft.com/help/5051987 fix
- https://support.microsoft.com/help/5052105 fix
- https://support.microsoft.com/help/5051980 fix
- https://support.microsoft.com/help/5052040 fix
- https://support.microsoft.com/help/5052006 fix
- https://support.microsoft.com/help/5052042 fix
- https://support.microsoft.com/help/5052020 fix