Security Updates for Microsoft Office (September 2021) (macOS)

high Nessus Plugin ID 153397


The Microsoft Office product installed on the remote host is affected by multiple vulnerabilities.


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.

- 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.


Microsoft has released a set of patches for Microsoft Office for Mac.

See Also

Plugin Details

Severity: High

ID: 153397

File Name: macos_ms21_sep_office.nasl

Version: 1.6

Type: local

Agent: macosx

Published: 9/15/2021

Updated: 11/30/2023

Supported Sensors: Nessus Agent, Nessus

Risk Information


Risk Factor: High

Score: 7.4


Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.6

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2021-38655


Risk Factor: High

Base Score: 7.8

Temporal Score: 7.2

Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:F/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:microsoft:office, cpe:/a:microsoft:excel

Required KB Items: Host/MacOSX/Version, installed_sw/Microsoft Excel

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 9/14/2021

Vulnerability Publication Date: 9/14/2021

Reference Information

CVE: CVE-2021-38650, CVE-2021-38655

IAVA: 2021-A-0425-S, 2021-A-0428-S