Detections
Analytics

Security Updates for Microsoft Excel Products C2R (September 2025)

high Nessus Plugin ID 264571

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Synopsis

The Microsoft Excel Products are missing a security update.

Description

The Microsoft Excel Products are missing a security update. It is, therefore, affected by the following vulnerabilities:

 - Multiple remote code execution vulnerabilities that attackers can exploit to bypass authentication and execute unauthorized arbitrary commands. (CVE-2025-54896, CVE-2025-54898, CVE-2025-54899, CVE-2025-54900, CVE-2025-54902, CVE-2025-54903, CVE-2025-54904)

 - An information disclosure vulnerability. (CVE-2025-54901) Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Microsoft has released patches to address these issues.

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

http://www.nessus.org/u?5931548c

Plugin Details

Severity: High

ID: 264571

File Name: smb_nt_ms25_sep_excel_c2r.nasl

Version: 1.2

Type: local

Agent: windows

Family: Windows

Published: 9/11/2025

Updated: 9/12/2025

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

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-2025-54896

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:excel

Required KB Items: SMB/MS_Bulletin_Checks/Possible

Patch Publication Date: 9/9/2025

Vulnerability Publication Date: 9/9/2025

Reference Information

CVE: CVE-2025-54896, CVE-2025-54898, CVE-2025-54899, CVE-2025-54900, CVE-2025-54901, CVE-2025-54902, CVE-2025-54903, CVE-2025-54904

IAVA: 2025-A-0664