CVE-2025-27747
Published: 08 April 2025
Summary
CVE-2025-27747 is a high-severity Untrusted Pointer Dereference (CWE-822) vulnerability in Microsoft Office Long Term Servicing Channel. Its CVSS base score is 7.8 (High).
Operationally, ranked in the top 30.0% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
The vulnerability is a use-after-free flaw, tracked as CWE-822, that affects Microsoft Office Word and carries a CVSS 3.1 score of 7.8. It permits an unauthorized attacker to execute arbitrary code on an affected system when certain conditions are met.
An attacker can trigger the issue locally by supplying a malicious document that the victim must open, requiring no privileges but relying on user interaction. Successful exploitation grants the attacker full control over confidentiality, integrity, and availability on the target host.
Microsoft has published an advisory describing the issue and available updates at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-27747. The EPSS probability has climbed from a low baseline of 0.0060 to a recorded peak of 0.0121, indicating that exploitation interest emerged after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-10131
Vulnerability details
Use after free in Microsoft Office Word 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
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.