CVE-2026-45384

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

Published Jun 10, 2026 CVSS 3.1 · 6.1 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Rikyoz
Rikyoz bit7z
Vendors & Products Rikyoz
Rikyoz bit7z
Type Values Removed Values Added
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.
Title bit7z: Arbitrary File Overwrite via Symlink Attack on Predictable Temp File During Archive Update
Weaknesses CWE-377
CWE-59
References
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Jun 11, 2026, 1:38 PM
Reserved
May 12, 2026, 12:51 AM
Status
Deferred
Published
Jun 10, 2026, 10:16 PM
Modified
Jul 23, 2026, 9:10 AM