CVE-2025-26630
Published: 11 March 2025
Description
An adversary may rely upon a user opening a malicious file in order to gain execution.
Security Summary
CVE-2025-26630 is a use-after-free vulnerability (CWE-416) affecting Microsoft Office Access. Published on 2025-03-11, it carries a CVSS v3.1 base score of 7.8 (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H). The flaw enables an unauthorized attacker to execute code locally on a system running the affected component.
Exploitation requires local access to the target system, low attack complexity, and no privileges from the attacker, though user interaction is necessary, such as opening a malicious file. A successful attack allows arbitrary code execution, resulting in high impacts to confidentiality, integrity, and availability.
Microsoft's Security Response Center provides guidance on updates and mitigation in its advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-26630.
Details
- CWE(s)
Affected Products
MITRE ATT&CK Enterprise Techniques
Why these techniques?
The use-after-free vulnerability in Microsoft Office Access enables arbitrary code execution upon opening a malicious file, directly mapping to T1203 (Exploitation for Client Execution) and T1204.002 (Malicious File under User Execution).