CVE-2025-54899

Published Sep 9, 2025

Last updated 10 months ago

Overview

Description
Free of memory not on the heap in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Source
secure@microsoft.com
NVD status
Analyzed
Products
365_apps, excel, office, office_long_term_servicing_channel

Risk scores

CVSS 3.1

Type
Primary
Base score
7.8
Impact score
5.9
Exploitability score
1.8
Vector string
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Severity
HIGH

Weaknesses

secure@microsoft.com
CWE-590

Social media

Hype score
Not currently trending

Configurations

References

Sources include official advisories and independent security research.