Microsoft Excel Remote Code Execution Vulnerability

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-2021-38655,     CVE-2021-38660)

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

  - A session spoofing vulnerability exists. An attacker can exploit this to perform actions with the     privileges of another user. (CVE-2021-38650)

  - A remote code execution vulnerability. An attacker can exploit this to bypass authentication and execute     unauthorized arbitrary commands. (CVE-2021-38646, CVE-2021-38655, CVE-2021-38658, CVE-2021-38659,       CVE-2021-38660)

  - An information disclosure vulnerability in the graphics component. An attacker can exploit this to     disclose sensitive information. (CVE-2021-38657)

The Microsoft Office Web Apps installation on the remote host is missing security updates. It is, therefore, affected by a remote code execution vulnerability. An attacker can exploit this to bypass authentication and execute unauthorized arbitrary commands.

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 product installed on the remote host is affected by multiple vulnerabilities, as follows:

  - A spoofing vulnerability in Microsoft Office that can be exploited by a remote, low privileged attacker.
    (CVE-2021-38650)

  - A remote code execution vulnerability in Microsoft Excel that can be exploited by a local, unprivileged     attacker. (CVE-2021-38655)

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	Type	Severity
162103	Security Updates for Microsoft Excel Products C2R (September 2021)	Nessus	Windows	Local	high
162054	Security Updates for Microsoft Office Products C2R (September 2021)	Nessus	Windows	Local	high
153470	Security Updates for Microsoft Office Web Apps (September 2021)	Nessus	Windows : Microsoft Bulletins	Local	high
153397	Security Updates for Microsoft Office (September 2021) (macOS)	Nessus	MacOS X Local Security Checks	Local	high
153387	Security Updates for Microsoft Office Products (September 2021)	Nessus	Windows : Microsoft Bulletins	Local	high
153380	Security Updates for Microsoft Excel Products (September 2021)	Nessus	Windows : Microsoft Bulletins	Local	high

Detections

Analytics

CVE-2021-38655

high

Tenable Plugins

high

high

high

high

high

high