CVE-2025-27748
Published: 08 April 2025
Summary
CVE-2025-27748 is a high-severity Use After Free (CWE-416) vulnerability in Microsoft Office Long Term Servicing Channel. Its CVSS base score is 7.8 (High).
Operationally, ranked in the top 30.6% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
A use-after-free vulnerability identified as CVE-2025-27748 and mapped to CWE-416 affects Microsoft Office. It received a CVSS 3.1 base score of 7.8 with the vector AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H, indicating local code execution is possible.
An unauthorized attacker can trigger the flaw on a local system when a user opens specially crafted content, resulting in arbitrary code execution with full impact to confidentiality, integrity, and availability.
The Microsoft Security Response Center advisory published for this CVE supplies official mitigation guidance and patch information. The EPSS score reached a peak of 0.0121 after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-10129
Vulnerability details
Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.
- 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.