The Microsoft Word Products are missing a security update. They are, therefore, affected by multiple vulnerabilities:

  - External control of file name or path in Microsoft Office Word allows an unauthorized attacker to     execute code locally. (CVE-2026-62804)

  - Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code     over a network. (CVE-2026-69556, CVE-2026-69671, CVE-2026-69764, CVE-2026-72972, CVE-2026-72973,     CVE-2026-78511, CVE-2026-78517, CVE-2026-78521, CVE-2026-80085)

  - Stack-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code     over a network. (CVE-2026-69686, CVE-2026-69722, CVE-2026-69759, CVE-2026-78504)

  - Buffer over-read in Microsoft Office Word allows an unauthorized attacker to disclose information     over a network. (CVE-2026-69719)

  - Out-of-bounds read in Microsoft Office Word allows an authorized attacker to disclose information     locally. (CVE-2026-72976)

  - Null pointer dereference in Microsoft Office Word allows an unauthorized attacker to execute code     over a network. (CVE-2026-77901)

  - Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information     over a network. (CVE-2026-77911, CVE-2026-78502, CVE-2026-78503, CVE-2026-78522, CVE-2026-80079,     CVE-2026-80090)

  - Improper null termination in Microsoft Office Word allows an unauthorized attacker to disclose     information locally. (CVE-2026-78506)

  - Heap-based buffer overflow in Microsoft Office Outlook allows an unauthorized attacker to execute     code over a network. (CVE-2026-78509)

  - Use after free in Microsoft Office Word allows an unauthorized attacker to execute code over a     network. (CVE-2026-78514)

  - Out-of-bounds read in Microsoft Office Outlook allows an unauthorized attacker to execute code over     a network. (CVE-2026-78520)

  - Use after free in Microsoft Office Outlook allows an unauthorized attacker to execute code over a     network. (CVE-2026-78525)

  - Double free in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
    (CVE-2026-80080)

  - Buffer over-read in Microsoft Office Word allows an unauthorized attacker to disclose information     locally. (CVE-2026-83949, CVE-2026-83951)

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 august-11-2026 advisory.

  - Use after free in Microsoft Office Word allows an unauthorized attacker to execute code locally.
    (CVE-2026-70311)

  - Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an     unauthorized attacker to execute code over a network. (CVE-2026-65807)

  - Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
    (CVE-2026-68793, CVE-2026-68814)

  - Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code     locally. (CVE-2026-68794, CVE-2026-68796, CVE-2026-68798, CVE-2026-68800, CVE-2026-68801, CVE-2026-68805,     CVE-2026-68807, CVE-2026-68812, CVE-2026-68815)

  - Stack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code     locally. (CVE-2026-68795, CVE-2026-68816, CVE-2026-68817)

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	Published	Updated	Severity
344290	Security Updates for Microsoft Word Products (September 2026)	Nessus	Windows : Microsoft Bulletins	9/9/2026	9/11/2026	critical
334691	Security Updates for Microsoft Office Products (August 2026) (macOS)	Nessus	MacOS X Local Security Checks	8/12/2026	8/17/2026	medium

Detections

Analytics

Plugins Search

critical

medium