CVE-2026-92205: (0Day) BusyBox libarchive Symlink Directory Traversal Arbitrary File Creation Vulnerability
BusyBox libarchive Symlink Directory Traversal Arbitrary File Creation Vulnerability. This vulnerability allows remote attackers to create arbitrary files on affected installations of BusyBox. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the libarchive component. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to create files in the context of the current user. Was ZDI-CAN-27556.
Affected Software
Event History
Frequently Asked Questions
What must an attacker do to exploit this issue?
The attacker must cause the target to visit a malicious page or open a malicious file. Exploitation relies on a user-supplied path being processed by BusyBox's libarchive component without proper validation.
What level of access does exploitation provide?
Successful exploitation allows arbitrary file creation in the context of the current user. The provided information does not indicate that the vulnerability directly grants execution or access beyond that user's permissions.
How can I determine whether a system may be affected?
Systems using BusyBox with the libarchive component may be affected. Review whether users or automated workflows can open untrusted archive-related files or visit untrusted content that could cause such files to be processed.