Code execution via malformed PE heap overwrite
Published Jun 12, 2026 · Updated Jun 12, 2026
Heap out-of-bounds write in Gen Digital antivirus products before VPS 25040308 allows attackers to execute code or crash the scanner. The shared Windows PE parsing logic writes beyond a heap buffer while scanning a malformed file; Gen Digital has not disclosed the exact routine or unchecked PE field. Exploitation requires local access and user interaction, with successful triggering corrupting memory in or terminating the antivirus process.
Summary
What happened
Heap out-of-bounds write in Gen Digital antivirus products before VPS 25040308 allows attackers to execute code or crash the scanner. The shared Windows PE parsing logic writes beyond a heap buffer while scanning a malformed file; Gen Digital has not disclosed the exact routine or unchecked PE field. Exploitation requires local access and user interaction, with successful triggering corrupting memory in or terminating the antivirus process.
The record
- CVE
- CVE-2025-7004
- Published
- Jun 12, 2026
- Updated
- Jun 12, 2026
- Vendor
- Gen Digital
- Product
- Avast One
- Classifications
- CWE-787, CAPEC-549, T1203
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 12, 2026CVE publishedPublication date reported by the CVE source.
- Jun 12, 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=0 <25040308
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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