CVE-2025-53816 MEDIUM

CVE-2025-53816: GHSL-2025-058 - 7-Zip Multi-byte write heap buffer overflow in NCompress::NRar5::CDecoder

Vendor Ipavlov
Product 7-Zip
Weakness CWE-122
Published July 17, 2025
Last update May 11, 2026
View on NVD All CVEs

CVSS base score

5.5/10
Attack vector Local
Attack complexity Low
Privileges required None
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

July 17, 2025 CVE published
May 11, 2026 Record updated