Local code execution via use-after-free
Published Dec 9, 2025 · Updated Apr 16, 2026
Use-after-free in Microsoft Office allows local users to execute arbitrary code through unspecified local input on affected systems. Microsoft has not published the affected component, the freed object's lifetime error, or the input path that causes the stale object to be reused. Local access is required, but the CNA assessment requires neither prior privileges nor user interaction; successful exploitation runs attacker-controlled code.
Summary
What happened
Use-after-free in Microsoft Office allows local users to execute arbitrary code through unspecified local input on affected systems. Microsoft has not published the affected component, the freed object's lifetime error, or the input path that causes the stale object to be reused. Local access is required, but the CNA assessment requires neither prior privileges nor user interaction; successful exploitation runs attacker-controlled code.
The record
- CVE
- CVE-2025-62557
- Published
- Dec 9, 2025
- Updated
- Apr 16, 2026
- Vendor
- Microsoft
- Product
- Microsoft Office LTSC for Mac 2024
- Classifications
- CWE-416, T1203
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Dec 9, 2025CVE publishedPublication date reported by the CVE source.
- Apr 16, 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 <16.104.25121423
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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