Code execution via undisclosed use-after-free
Published May 13, 2025 · Updated Feb 26, 2026
Use-after-free in Microsoft Office allows attackers to execute code locally across affected desktop and Android releases. Microsoft identifies the defect as a use-after-free in the Office suite but has not disclosed the affected object, parser, file format, or memory-lifetime error. Exploitation requires local access, needs no prior privileges or user interaction under Microsoft's assessment, and grants code execution in the application's security context.
Summary
What happened
Use-after-free in Microsoft Office allows attackers to execute code locally across affected desktop and Android releases. Microsoft identifies the defect as a use-after-free in the Office suite but has not disclosed the affected object, parser, file format, or memory-lifetime error. Exploitation requires local access, needs no prior privileges or user interaction under Microsoft's assessment, and grants code execution in the application's security context.
The record
- CVE
- CVE-2025-30386
- Published
- May 13, 2025
- Updated
- Feb 26, 2026
- Vendor
- Microsoft
- Product
- Microsoft Office LTSC for Mac 2024
- Classifications
- CWE-416, T1203
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- May 13, 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=16.0.0 <16.97.25042725
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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