Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

The Microsoft Excel Products are missing security updates. It is, therefore, affected by multiple vulnerabilities:
  - A remote code execution vulnerability. An attacker can exploit this to bypass authentication and execute     unauthorized arbitrary commands. (CVE-2025-29977, CVE-2025-29979, CVE-2025-30375, CVE-2025-30376,     CVE-2025-30379, CVE-2025-30381, CVE-2025-30383, CVE-2025-30393, CVE-2025-32704)

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

The version of Microsoft Office for Mac installed on the remote host is affected by multiple vulnerabilities as referenced in the may-13-2025 advisory.

  - Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.
    (CVE-2025-30377, CVE-2025-30386)

  - Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
    (CVE-2025-29977, CVE-2025-30393)

  - Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code     locally. (CVE-2025-29979, CVE-2025-30376)

  - Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an     unauthorized attacker to execute code locally. (CVE-2025-30375, CVE-2025-30383)

  - Release of invalid pointer or reference in Microsoft Office Excel allows an unauthorized attacker to     execute code locally. (CVE-2025-30379)

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

The Microsoft Excel Products are missing a security update. They are, therefore, affected by multiple remote code execution vulnerabilities. An attacker can exploit these to bypass authentication and execute unauthorized arbitrary commands.

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 Online Server installation on the remote host is missing security updates. It is, therefore, affected by multiple vulnerabilities:
  - A remote code execution vulnerability. An attacker can exploit this to bypass authentication and execute     unauthorized arbitrary commands. (CVE-2025-29977, CVE-2025-29979, CVE-2025-30375, CVE-2025-30376,     CVE-2025-30379, CVE-2025-30381, CVE-2025-30383)

ID	Name	Product	Family	Severity
236841	Security Updates for Microsoft Excel Products C2R (May 2025)	Nessus	Windows	high
236764	Security Updates for Microsoft Office Products (May 2025) (macOS)	Nessus	MacOS X Local Security Checks	high
235850	Security Updates for Microsoft Excel Products (May 2025)	Nessus	Windows : Microsoft Bulletins	high
235841	Security Updates for Microsoft Office Online Server (May 2025)	Nessus	Windows : Microsoft Bulletins	high

Detections

Analytics

CVE-2025-30383

high

Tenable Plugins

high

high

high

high