Security Updates for Microsoft Office Products (October 2021)

high Nessus Plugin ID 154038


The Microsoft Office Products are affected by multiple vulnerabilities.


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

- An information disclosure vulnerability. An attacker can exploit this to disclose potentially sensitive information. (CVE-2021-40454, CVE-2021-40472)

- A remote code execution vulnerability. An attacker can exploit this to bypass authentication and execute unauthorized arbitrary commands. (CVE-2021-40471, CVE-2021-40473, CVE-2021-40474, CVE-2021-40479, CVE-2021-40480, CVE-2021-40481, CVE-2021-40485, CVE-2021-40486)


Microsoft has released the following security updates to address this issue:

For Office 365, Office 2016 C2R, or Office 2019, ensure automatic updates are enabled or open any office app and manually perform an update.

See Also

Plugin Details

Severity: High

ID: 154038

File Name: smb_nt_ms21_oct_office.nasl

Version: 1.12

Type: local

Agent: windows

Published: 10/12/2021

Updated: 11/28/2023

Supported Sensors: 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-2021-40479


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

Required KB Items: SMB/MS_Bulletin_Checks/Possible

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/12/2021

Vulnerability Publication Date: 10/12/2021

Reference Information

CVE: CVE-2021-40454, CVE-2021-40471, CVE-2021-40472, CVE-2021-40473, CVE-2021-40479

IAVA: 2021-A-0465-S, 2021-A-0468-S, 2021-A-0472-S, 2021-A-0473-S, 2021-A-0475-S

MSFT: MS21-4018332, MS21-4461476, MS21-5001982, MS21-5001985

MSKB: 4018332, 4461476, 5001982, 5001985