Local code execution via use-after-free
Published Oct 14, 2025 · Updated Feb 26, 2026
Use-after-free in Microsoft Office Visio allows local users to execute arbitrary code after required user interaction. Microsoft has not disclosed the affected Visio parser or the object whose lifetime is mishandled during content processing. Successful exploitation executes code in the security context of the interacting user.
Summary
What happened
Use-after-free in Microsoft Office Visio allows local users to execute arbitrary code after required user interaction. Microsoft has not disclosed the affected Visio parser or the object whose lifetime is mishandled during content processing. Successful exploitation executes code in the security context of the interacting user.
The record
- CVE
- CVE-2025-59226
- Published
- Oct 14, 2025
- Updated
- Feb 26, 2026
- Vendor
- Microsoft
- Product
- Microsoft Office LTSC 2021
- Classifications
- CWE-416, T1204.002
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Oct 14, 2025CVE publishedPublication date reported by the CVE source.
- Feb 26, 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=16.0.1 <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.
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Technologies
Your stack
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Your stack
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