CVE-2025-53816: CWE-122: Heap-based Buffer Overflow in ipavlov 7-Zip
7-Zip is a file archiver with a high compression ratio. Zeroes written outside heap buffer in RAR5 handler may lead to memory corruption and denial of service in versions of 7-Zip prior to 25.0.0. Version 25.0.0 contains a fix for the issue.
AI Analysis
Technical Summary
The vulnerability CVE-2025-53816 affects 7-Zip, a file archiver, specifically in its RAR5 archive handler. Due to improper handling of heap buffers, zeroes are written beyond the allocated memory bounds, causing heap-based buffer overflow. This can corrupt memory and result in denial of service conditions. The vulnerability impacts all versions of 7-Zip before 25.0.0. The vendor has addressed this issue in version 25.0.0, which contains the necessary fix.
Potential Impact
Successful exploitation of this vulnerability can cause memory corruption and denial of service on affected systems running vulnerable versions of 7-Zip. The CVSS 4.0 score of 5.5 indicates a medium severity impact. There is no indication of privilege escalation, remote code execution, or data confidentiality impact. No known active exploits have been reported.
Mitigation Recommendations
Upgrade to 7-Zip version 25.0.0 or later, which contains the official fix for this vulnerability. Users running earlier versions should apply this update to remediate the issue. Since this is not a cloud service, remediation depends on user action to update the software. Patch status is confirmed by the vendor advisory stating the fix is included in version 25.0.0.
CVE-2025-53816: CWE-122: Heap-based Buffer Overflow in ipavlov 7-Zip
Description
7-Zip is a file archiver with a high compression ratio. Zeroes written outside heap buffer in RAR5 handler may lead to memory corruption and denial of service in versions of 7-Zip prior to 25.0.0. Version 25.0.0 contains a fix for the issue.
CVSS v4.0
Score 5.5medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability CVE-2025-53816 affects 7-Zip, a file archiver, specifically in its RAR5 archive handler. Due to improper handling of heap buffers, zeroes are written beyond the allocated memory bounds, causing heap-based buffer overflow. This can corrupt memory and result in denial of service conditions. The vulnerability impacts all versions of 7-Zip before 25.0.0. The vendor has addressed this issue in version 25.0.0, which contains the necessary fix.
Potential Impact
Successful exploitation of this vulnerability can cause memory corruption and denial of service on affected systems running vulnerable versions of 7-Zip. The CVSS 4.0 score of 5.5 indicates a medium severity impact. There is no indication of privilege escalation, remote code execution, or data confidentiality impact. No known active exploits have been reported.
Mitigation Recommendations
Upgrade to 7-Zip version 25.0.0 or later, which contains the official fix for this vulnerability. Users running earlier versions should apply this update to remediate the issue. Since this is not a cloud service, remediation depends on user action to update the software. Patch status is confirmed by the vendor advisory stating the fix is included in version 25.0.0.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2025-07-09T14:14:52.528Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 68794189a83201eaace81894
Added to database: 07/17/2025, 18:31:37 UTC
Last enriched: 05/12/2026, 05:28:48 UTC
Last updated: 09/10/2026, 19:36:51 UTC
Views: 293
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