Untrusted search path in Microsoft Office allows an unauthorized attacker to execute code locally.

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

  - Remote code execution vulnerabilities that attackers can exploit to bypass authentication and execute     unauthorized arbitrary commands. (CVE-2026-20952, CVE-2026-20953)

  - A privilege escalation vulnerability. An attacker can exploit this to gain elevated privileges. (CVE-2026-20943)

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

The Microsoft SharePoint Server 2019 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-2026-20948,     CVE-2026-62551, CVE-2026-62563)

  - A session spoofing vulnerability exists. An attacker can     exploit this to perform actions with the privileges of     another user. (CVE-2026-20958)

  - A information disclosure vulnerability exists. An     authorized attacker could use this to disclose     information over a network (CVE-2026-20959)

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

The Microsoft SharePoint Server Subscription Edition 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-2026-20948,     CVE-2026-62551, CVE-2026-62563)

  - A session spoofing vulnerability exists. An attacker can     exploit this to perform actions with the privileges of     another user. (CVE-2026-20958)

  - A information disclosure vulnerability exists. An     authorized attacker could use this to disclose     information over a network (CVE-2026-20959)

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

The Microsoft SharePoint Server 2016 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-2026-20947,     CVE-2026-20948, CVE-2026-62551, CVE-2026-62563)

  - A session spoofing vulnerability exists. An attacker can     exploit this to perform actions with the privileges of     another user. (CVE-2026-20958)

  - A information disclosure vulnerability exists. An     authorized attacker could use this to disclose     information over a network (CVE-2026-20959)

Note that Nessus has not tested for this issue 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:

  - A remote code execution vulnerability. An attacker can exploit this to bypass authentication and execute     unauthorized arbitrary commands. (CVE-2026-20952, CVE-2026-20953)

  - A privilege escalation vulnerability. An attacker can exploit this to gain elevated privileges. (CVE-2026-20943)

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
283874	Security Updates for Microsoft Office Products C2R (January 2026)	Nessus	Windows	high
283475	Security Updates for Microsoft SharePoint Server 2019 (January 2026)	Nessus	Windows : Microsoft Bulletins	critical
283469	Security Updates for Microsoft SharePoint Server Subscription Edition (January 2026)	Nessus	Windows : Microsoft Bulletins	critical
283468	Security Updates for Microsoft SharePoint Server 2016 (January 2026)	Nessus	Windows : Microsoft Bulletins	critical
283467	Security Updates for Microsoft Office Products (January 2026)	Nessus	Windows : Microsoft Bulletins	high

Detections

Analytics

CVE-2026-20943

high

Tenable Plugins

high

critical

critical

critical

high