Detections
Analytics

Security Updates for Microsoft Office Products (CVE-2026-21509)

high Nessus Plugin ID 297127

Synopsis

The Microsoft Office Products are affected by a security feature bypass vulnerability.

Description

The Microsoft Office Products are missing security updates. It is, therefore, affected by a security feature bypass vulnerability.

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

Solution

Microsoft has released the following updates to address these issues:
 - KB5002713

See Also

http://www.nessus.org/u?1ca38e55

Plugin Details

Severity: High

ID: 297127

File Name: smb_nt_ms26_jan_office_cve-2026-21509.nasl

Version: 1.1

Type: local

Agent: windows

Published: 1/29/2026

Updated: 1/29/2026

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Critical

Score: 9.2

CVSS v2

Risk Factor: High

Base Score: 7.2

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

CVSS Score Source: CVE-2026-21509

CVSS v3

Risk Factor: High

Base Score: 7.8

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

Vulnerability Information

CPE: cpe:/a:microsoft:office

Required KB Items: SMB/MS_Bulletin_Checks/Possible

Patch Publication Date: 1/26/2026

Vulnerability Publication Date: 1/26/2026

Reference Information

CVE: CVE-2026-21509