CVE-2025-54906

HIGH

Microsoft 365 Apps and Office - Use-After-Free

Title source: llm

Free of memory not on the heap in Microsoft Office allows an unauthorized attacker to execute code locally.

Core 1

Core References

Vendor Advisory vendor-advisory patch

CVSS v3 7.8

EPSS 0.0018

EPSS Percentile 38.7%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Vulnrichment

Exploitation none

Automatable no

Technical Impact total

CWE

CWE-416

Status published

Products (7)

microsoft/365_apps (2 CPE variants)

microsoft/office 2016 (2 CPE variants)

microsoft/office 2019 (2 CPE variants)

microsoft/office_long_term_servicing_channel 2021 (3 CPE variants)

microsoft/office_long_term_servicing_channel 2024 (3 CPE variants)

microsoft/sharepoint_server 2016

microsoft/sharepoint_server 2019

Published Sep 09, 2025

Tracked Since Feb 18, 2026