What’s Vulnerable › Vulnerabilities

CVE-2026-45384: bit7z: Arbitrary File Overwrite via Symlink Attack on Predictable Temp File During Archive Update

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-10 · updated 2026-07-23
• Weakness: CWE-59

Description

bit7z is a cross-platform C++ static library that allows the compression/extraction of archive files. Prior to version 4.0.12, there is an arbitrary file overwrite vulnerability via symlink attack on predictable temp files during archive update. This issue has been patched in version 4.0.12.

Affected products

• rikyoz bit7z: before 4.0.12

References

• https://github.com/rikyoz/bit7z/releases/tag/v4.0.12
• https://github.com/rikyoz/bit7z/security/advisories/GHSA-wjch-42rm-q53h
• https://github.com/rikyoz/bit7z/security/advisories/GHSA-wjch-42rm-q53h

Get alerted when CVE-2026-45384 or the next vulnerability affects your stack