CVE-2026-45384
bit7z: Arbitrary File Overwrite via Symlink Attack on Predictable Temp File During Archive Update
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.
INFO
Published Date :
June 10, 2026, 10:16 p.m.
Last Modified :
July 23, 2026, 9:10 a.m.
Remotely Exploit :
No
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | MITRE-CVE |
Solution
- Update bit7z to version 4.0.12 or later.
- Apply vendor-supplied patches if available.
Public PoC/Exploit Available at Github
CVE-2026-45384 has a 1 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-45384.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-45384 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-45384
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2026-45384 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-45384 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Jul. 23, 2026
Action Type Old Value New Value Added Translation Title: bit7z de rikyoz, Description: bit7z es una biblioteca estática de C++ multiplataforma que permite la compresión/extracción de archivos comprimidos. Antes de la versión 4.0.12, existe una vulnerabilidad de sobrescritura arbitraria de archivos mediante un ataque de enlace simbólico en archivos temporales predecibles durante la actualización del archivo. Este problema ha sido parcheado en la versión 4.0.12. -
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'rikyoz', 'product': 'bit7z', 'versions': [{'status': 'affected', 'version': '< 4.0.12'}]}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-45384', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-06-11T13:38:29.357196Z'} -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 11, 2026
Action Type Old Value New Value Added Reference https://github.com/rikyoz/bit7z/security/advisories/GHSA-wjch-42rm-q53h -
New CVE Received by [email protected]
Jun. 10, 2026
Action Type Old Value New Value 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. Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L Added CWE CWE-59 Added CWE CWE-377 Added Reference https://github.com/rikyoz/bit7z/releases/tag/v4.0.12 Added Reference https://github.com/rikyoz/bit7z/security/advisories/GHSA-wjch-42rm-q53h