Code execution via GDI+ integer overflow
Published Jan 14, 2025 · Updated Jun 9, 2026
Integer overflow in Microsoft GDI+ allows local users to execute code through crafted input on affected Windows and Office releases. Microsoft identifies GDI+ and CWE-190 but has not published the specific arithmetic operation, parser path, or malformed input structure. Exploitation requires local low-privileged access without separate user interaction; Microsoft has not disclosed the resulting execution context.
Summary
What happened
Integer overflow in Microsoft GDI+ allows local users to execute code through crafted input on affected Windows and Office releases. Microsoft identifies GDI+ and CWE-190 but has not published the specific arithmetic operation, parser path, or malformed input structure. Exploitation requires local low-privileged access without separate user interaction; Microsoft has not disclosed the resulting execution context.
The record
- CVE
- CVE-2025-21338
- Published
- Jan 14, 2025
- Updated
- Jun 9, 2026
- Vendor
- Microsoft
- Product
- Microsoft Office LTSC for Mac 2024
- Classifications
- CWE-190, T1203
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jan 14, 2025CVE publishedPublication date reported by the CVE source.
- Jun 9, 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 <16.93.25011212
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.
Weakness, pattern, technique
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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