GHSL-2025-058 - 7-Zip Multi-byte write heap buffer overflow in NCompress::NRar5::CDecoder

5.5 CVSS

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

More from ipavlov

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CVE-2025-53817

GHSL-2025-059 - 7-Zip - Null pointer array write attempt in NArchive::NCom::CHandler::GetStream

Medium 5.5

Affected Vendor

ipavlov

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Affected Software

7-Zip

Vulnerable Versions:

< 25.0.0

Timeline

Official Publish: July 17th, 2025

Last Modified: May 11th, 2026

Added to House: July 22nd, 2026

CVSS Vectors

Weaknesses (CWE)

CWE-122

MITRE ATT&CK TTPs

T1203 Exploitation for Client Execution

Execution

T1068 Exploitation for Privilege Escalation

Privilege Escalation

T1055 Process Injection

Defense Evasion