CVE-2026-45384

bit7z: Arbitrary File Overwrite via Symlink Attack on Predictable Temp File During Archive Update

CVSS 6.1 MEDIUMEPSS 0.1%CWE-377 CWE-59

Vexday Risk Score

13Baixo

Decisão SSVC (CISA)

Track

Sem sinal de exploração → monitorar

CVSS 6.1EPSS 0.1%KEV nãoPoC —Nuclei —Metasploit —Patch —

Ciclo de vida

10 jun 2026Publicada no NVD

Recomendação: Monitorar — sem sinal de exploração no momento.

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.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L

Produtos afetados

rikyoz · bit7z

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Referências

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