Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.

The version of Microsoft Office for Mac installed on the remote host is affected by multiple vulnerabilities as referenced in the april-15-2025 advisory.

  - Improper input validation in Microsoft Office Word allows an unauthorized attacker to bypass a security     feature over a network. (CVE-2025-29816)

  - Incomplete list of disallowed inputs in Microsoft Office OneNote allows an unauthorized attacker to bypass     a security feature locally. (CVE-2025-29822)

  - Out-of-bounds read in Microsoft Office allows an unauthorized attacker to execute code locally.
    (CVE-2025-26642)

  - Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
    (CVE-2025-27750, CVE-2025-27751)

  - Use after free in Microsoft Office Word allows an unauthorized attacker to execute code locally.
    (CVE-2025-27747, CVE-2025-29820)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Microsoft Office Products are missing security updates. They are, therefore, affected by multiple vulnerabilities:

  - An elevation of privilege vulnerability. An attacker can exploit this to gain elevated privileges.
    (CVE-2025-29792)

  - A security feature bypass vulnerability exists. An attacker can exploit this and bypass the security     feature and perform unauthorized actions compromising the integrity of the system/application.
    (CVE-2025-29816)

  - A remote code execution vulnerability. An attacker can exploit this to bypass authentication and execute     unauthorized arbitrary commands. (CVE-2025-26642, CVE-2025-27745, CVE-2025-27746, CVE-2025-27748,     CVE-2025-27749, CVE-2025-27752, CVE-2025-29791)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
234490	Security Updates for Microsoft Office Products (April 2025) (macOS)	Nessus	MacOS X Local Security Checks	high
234041	Security Updates for Microsoft Office Products (April 2025)	Nessus	Windows : Microsoft Bulletins	high

Detections

Analytics

CVE-2025-27749

high

Tenable Plugins

high

high