Code execution via undisclosed use-after-free
Published Mar 11, 2025 · Updated Feb 13, 2026
Use-after-free in Microsoft Office LTSC 2024 and Microsoft 365 Apps for enterprise allows local users to execute code. Microsoft has not disclosed the affected Office component, the object lifetime error, or the user-controlled input that causes released memory to be reused. Exploitation requires local access and user interaction, and successful exploitation runs attacker-controlled code in the affected user context.
Summary
What happened
Use-after-free in Microsoft Office LTSC 2024 and Microsoft 365 Apps for enterprise allows local users to execute code. Microsoft has not disclosed the affected Office component, the object lifetime error, or the user-controlled input that causes released memory to be reused. Exploitation requires local access and user interaction, and successful exploitation runs attacker-controlled code in the affected user context.
The record
- CVE
- CVE-2025-26629
- Published
- Mar 11, 2025
- Updated
- Feb 13, 2026
- Vendor
- Microsoft
- Product
- Microsoft Office LTSC 2024
- Classifications
- CWE-416, T1204
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Mar 11, 2025CVE publishedPublication date reported by the CVE source.
- Feb 13, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=16.0.0 <https://aka.ms/OfficeSecurityReleases
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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