Risk Scores
CVSS v3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Windows 10 Version 1809 for 32-bit Systems 10.0.17763.6775 | ||
| Windows 11 Version 22H2 for ARM64-based Systems <10.0.22621.4751 | ||
| Windows Server 2019 (Server Core installation) 10.0.17763.6775 | ||
| Windows 10 Version 1809 for x64-based Systems 10.0.17763.6775 | ||
| Windows Server 2022 (Server Core installation) 10.0.20348.3091 | ||
| Windows 11 Version 22H2 for ARM64-based Systems 10.0.22621.4751 | ||
| Windows Server 2019 <10.0.17763.6775 | ||
| Windows 10 Version 21H2 for x64-based Systems 10.0.19044.5371 | ||
| Windows 10 Version 21H2 for x64-based Systems <10.0.19044.5371 | ||
| Windows 10 Version 21H2 for ARM64-based Systems 10.0.19044.5371 | ||
| Windows 10 Version 1809 for x64-based Systems <10.0.17763.6775 | ||
| Windows Server 2022 10.0.20348.3091 | ||
| Windows 10 Version 21H2 for 32-bit Systems <10.0.19044.5371 | ||
| Windows 10 Version 21H2 for ARM64-based Systems <10.0.19044.5371 | ||
| Windows 10 Version 1809 for 32-bit Systems <10.0.17763.6775 | ||
| Windows 10 Version 21H2 for 32-bit Systems 10.0.19044.5371 | ||
| Windows Server 2019 10.0.17763.6775 | ||
| Windows Server 2022 <10.0.20348.3091 | ||
| Windows Server 2019 (Server Core installation) <10.0.17763.6775 | ||
| Windows Server 2022 (Server Core installation) <10.0.20348.3091 |
Timeline
- Jan 14, 2025 CVE Published
- Feb 4, 2025 PoC Published
- Apr 15, 2026 Security Advisory
- Apr 15, 2026 Security Advisory
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21220 advisory
- https://msrc.microsoft.com/csaf/advisories/2025/msrc_cve-2025-21220.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/5050008 fix
- https://support.microsoft.com/help/5049983 fix
- https://support.microsoft.com/help/5049981 fix
- https://support.microsoft.com/help/5050021 fix
- https://support.microsoft.com/help/5050009 fix
- https://support.microsoft.com/help/5049984 fix
- https://support.microsoft.com/help/5050013 fix
- https://support.microsoft.com/help/5049993 fix
- https://support.microsoft.com/help/5050063 fix
- https://support.microsoft.com/help/5050061 fix
- https://support.microsoft.com/help/5050049 fix
- https://support.microsoft.com/help/5050006 fix
- https://support.microsoft.com/help/5050004 fix
- https://support.microsoft.com/help/5050048 fix