CVE-2025-27491
Published: 08 April 2025
Summary
CVE-2025-27491 is a high-severity Use After Free (CWE-416) vulnerability in Microsoft Windows 10 1507. Its CVSS base score is 7.1 (High).
Operationally, ranked in the top 19.6% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
CVE-2025-27491 is a use-after-free vulnerability, tracked under CWE-416, that affects the Windows Hyper-V component. The flaw carries a CVSS 3.1 score of 7.1 and was published on 8 April 2025.
An authorized attacker with low privileges can exploit the issue over a network. Successful exploitation requires high attack complexity and user interaction, after which the attacker can execute arbitrary code with high impact to confidentiality, integrity, and availability.
The Microsoft Security Response Center advisory linked in the reference provides official guidance on mitigation and available patches. The associated EPSS score remains flat at 0.0133 with no material increase observed after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-10164
Vulnerability details
Use after free in Windows Hyper-V allows an authorized attacker to execute code over a network.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Use-after-free exploits that achieve arbitrary code execution are blocked or significantly hardened by non-executable pages and ASLR.