CVE-2025-30400
Published: 13 May 2025
Summary
CVE-2025-30400 is a high-severity Use After Free (CWE-416) vulnerability in Microsoft Windows 10 1809. Its CVSS base score is 7.8 (High).
Operationally, ranked in the top 23.8% of CVEs by exploit likelihood; CISA has added it to the Known Exploited Vulnerabilities catalog.
The strongest mitigations our analysis identified are NIST 800-53 SI-16 (Memory Protection) and SI-2 (Flaw Remediation).
Deeper analysis
CVE-2025-30400 is a use-after-free vulnerability (CWE-416) in the Windows Desktop Window Manager (DWM) component. It carries a CVSS 3.1 base score of 7.8 and affects systems where DWM handles window composition and rendering. The flaw was published on 13 May 2025.
An attacker with local access and a low-privileged account can trigger the use-after-free condition to escalate privileges on the affected host, achieving full control over confidentiality, integrity, and availability without user interaction.
Microsoft has published remediation guidance through its Security Response Center, and the vulnerability appears in CISA’s Known Exploited Vulnerabilities catalog, indicating that patches or configuration mitigations are available via standard Windows update channels.
EPSS scores remain low, with a current value of 0.0091 and a recorded peak of 0.0113.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-14444
Vulnerability details
Use after free in Windows DWM allows an authorized attacker to elevate privileges locally.
- CWE(s)
- KEV Date Added
- 13 May 2025
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly requires timely application of Microsoft security updates that remediate the use-after-free flaw in DWM before exploitation succeeds.
Implements memory-protection safeguards that block use-after-free exploitation attempts in Windows components such as DWM.
Enforces least-privilege restrictions so a low-privileged local account cannot easily reach or abuse the DWM flaw to obtain full system rights.