Security Updates for Microsoft Office Products (January 2021)

High Nessus Plugin ID 144885

New! Vulnerability Priority Rating (VPR)

Tenable calculates a dynamic VPR for every vulnerability. VPR combines vulnerability information with threat intelligence and machine learning algorithms to predict which vulnerabilities are most likely to be exploited in attacks. Read more about what VPR is and how it's different from CVSS.

VPR Score: 5.9


The Microsoft Office Products are affected by multiple vulnerabilities.


The Microsoft Office Products are missing security updates. It is, therefore, affected by multiple remote code execution vulnerabilities. An attacker can exploit these to bypass authentication and execute unauthorized arbitrary commands.

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 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: 144885

File Name: smb_nt_ms21_jan_office.nasl

Version: 1.5

Type: local

Agent: windows

Published: 2021/01/12

Updated: 2021/01/15

Dependencies: 57033, 27524, 13855

Risk Information

Risk Factor: High

VPR Score: 5.9

CVSS Score Source: CVE-2021-1716

CVSS v2.0

Base Score: 9.3

Temporal Score: 6.9

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

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 7.8

Temporal Score: 6.8

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:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:microsoft:office

Required KB Items: SMB/MS_Bulletin_Checks/Possible

Exploit Ease: No known exploits are available

Patch Publication Date: 2021/01/12

Vulnerability Publication Date: 2021/01/12

Reference Information

CVE: CVE-2021-1711, CVE-2021-1714, CVE-2021-1715, CVE-2021-1716

MSKB: 4493168, 4486759, 4493181, 4486755, 4486762, 4493143, 4493142

MSFT: MS21-4493168, MS21-4486759, MS21-4493181, MS21-4486755, MS21-4486762, MS21-4493143, MS21-4493142

IAVA: 2021-A-0016, 2021-A-0017, 2021-A-0024