VDB
msrc_CVE-2025-21221
msrc_CVE-2025-21221
PUBLISHED
CVSS 8.800000190734863 HIGH
Risk Scores
CVSS v3.1
8.800000190734863
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Windows 10 Version 21H2 for ARM64-based Systems <10.0.19044.5737 | ||
| Windows 10 Version 1809 for x64-based Systems <10.0.17763.7136 | ||
| Windows 10 Version 21H2 for x64-based Systems <10.0.19044.5737 | ||
| Windows Server 2019 <10.0.17763.7136 | ||
| Windows 10 Version 21H2 for x64-based Systems 10.0.19044.5737 | ||
| Windows 11 Version 22H2 for ARM64-based Systems 10.0.22621.5189 | ||
| Windows 10 Version 21H2 for 32-bit Systems 10.0.19044.5737 | ||
| Windows Server 2019 10.0.17763.7136 | ||
| Windows 10 Version 1809 for x64-based Systems 10.0.17763.7136 | ||
| Windows 10 Version 21H2 for ARM64-based Systems 10.0.19044.5737 | ||
| Windows Server 2022 <10.0.20348.3453 | ||
| Windows 11 Version 22H2 for ARM64-based Systems <10.0.22621.5189 | ||
| Windows 10 Version 1809 for 32-bit Systems <10.0.17763.7136 | ||
| Windows Server 2019 (Server Core installation) 10.0.17763.7136 | ||
| Windows Server 2022 (Server Core installation) 10.0.20348.3453 | ||
| Windows Server 2022 10.0.20348.3453 | ||
| Windows 10 Version 21H2 for 32-bit Systems <10.0.19044.5737 | ||
| Windows 10 Version 1809 for 32-bit Systems 10.0.17763.7136 | ||
| Windows Server 2019 (Server Core installation) <10.0.17763.7136 | ||
| Windows Server 2022 (Server Core installation) <10.0.20348.3453 |
Timeline
- Apr 8, 2025 CVE Published
- Apr 9, 2025 CVE Updated
- Apr 1, 2026 Security Advisory
- Apr 1, 2026 Security Advisory
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21221 advisory
- https://msrc.microsoft.com/csaf/advisories/2025/msrc_cve-2025-21221.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/5055519 fix
- https://support.microsoft.com/help/5055526 fix
- https://support.microsoft.com/help/5055518 fix
- https://support.microsoft.com/help/5055528 fix
- https://support.microsoft.com/help/5055523 fix
- https://support.microsoft.com/help/5055527 fix
- https://support.microsoft.com/help/5055547 fix
- https://support.microsoft.com/help/5055521 fix
- https://support.microsoft.com/help/5055609 fix
- https://support.microsoft.com/help/5055596 fix
- https://support.microsoft.com/help/5055561 fix
- https://support.microsoft.com/help/5055570 fix
- https://support.microsoft.com/help/5055581 fix
- https://support.microsoft.com/help/5055557 fix