CVE-2025-54901

Microsoft Excel Information Disclosure Vulnerability

State: Published
Severity: 5.5 Medium
Published: Sep 9, 2025
Updated: Feb 20, 2026
Reserved: Jul 31, 2025

Description

Buffer over-read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.

Scores

CVSS	Score	Vector	Source
3.1	5.5 Medium	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C	microsoft

Weaknesses

CWE-126 Buffer Over-read

Affected Products

Product	Versions
Microsoft 365 Apps for EnterpriseMicrosoft	16.0.1 to before https://aka.ms/OfficeSecurityReleasesAffected
Microsoft Excel 2016Microsoft	16.0.0.0 to before 16.0.5517.1000Affected
Microsoft Office 2019Microsoft	19.0.0 to before https://aka.ms/OfficeSecurityReleasesAffected
Microsoft Office LTSC 2021Microsoft	16.0.1 to before https://aka.ms/OfficeSecurityReleasesAffected
Microsoft Office LTSC 2024Microsoft	16.0.0 to before https://aka.ms/OfficeSecurityReleasesAffected
Microsoft Office LTSC for Mac 2021Microsoft	16.0.1 to before 16.101.25091314Affected
Microsoft Office LTSC for Mac 2024Microsoft	16.0.0 to before 16.101.25091314Affected

References

Microsoft Excel Information Disclosure Vulnerabilityvendor-advisorypatch

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