CVEs / CVE-2025-30400
CVE-2025-30400: Microsoft Windows DWM Core Library Use-After-Free Vulnerability
- Known exploited in the CISA KEV catalog since 13 May 2025
- high 7.8 CVSS 3.1 (from the CNA)
- EPSS 1.91% chance of exploitation in the next 30 days, higher than 79% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
Microsoft Windows DWM Core Library contains a use-after-free vulnerability that allows an authorized attacker to elevate privileges locally.
Description
Use after free in Windows DWM allows an authorized attacker to elevate privileges locally.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| Microsoft Windows 10 Version 1809 | from 10.0.17763.0, before 10.0.17763.7314 | 10.0.17763.7314 |
| Microsoft Windows 10 Version 21H2 | from 10.0.19044.0, before 10.0.19044.5854 | 10.0.19044.5854 |
| Microsoft Windows 10 Version 22H2 | from 10.0.19045.0, before 10.0.19045.5854 | 10.0.19045.5854 |
| Microsoft Windows 11 version 22H2 | from 10.0.22621.0, before 10.0.22621.5335 | 10.0.22621.5335 |
| Microsoft Windows 11 version 22H3 | from 10.0.22631.0, before 10.0.22631.5335 | 10.0.22631.5335 |
| Microsoft Windows 11 Version 23H2 | from 10.0.22631.0, before 10.0.22631.5335 | 10.0.22631.5335 |
| Microsoft Windows 11 Version 24H2 | from 10.0.26100.0, before 10.0.26100.4061 | 10.0.26100.4061 |
| Microsoft Windows Server 2019 | from 10.0.17763.0, before 10.0.17763.7314 | 10.0.17763.7314 |
| Microsoft Windows Server 2019 (Server Core installation) | from 10.0.17763.0, before 10.0.17763.7314 | 10.0.17763.7314 |
| Microsoft Windows Server 2022 | from 10.0.20348.0, before 10.0.20348.3692 | 10.0.20348.3692 |
| Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) | from 10.0.25398.0, before 10.0.25398.1611 | 10.0.25398.1611 |
| Microsoft Windows Server 2025 | from 10.0.26100.0, before 10.0.26100.4061 | 10.0.26100.4061 |
| Microsoft Windows Server 2025 (Server Core installation) | from 10.0.26100.0, before 10.0.26100.4061 | 10.0.26100.4061 |
Exploitation
| In CISA KEV since | 13 May 2025 |
|---|---|
| Due date for US federal agencies | 3 Jun 2025 |
| Used in ransomware campaigns | Unknown |
| Required action | Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. |
Severity
| CVSS 3.1 | 7.8 highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HScored by the CNA ([email protected]) |
|---|---|
| Weakness | CWE-416 |
References
- CVE-2025-30400 on NVD
- CVE-2025-30400 in the CISA KEV catalog
- https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2025-30400 (cited by CISA)
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-30400 Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-30400 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.