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.
Fix
Vendor advisories in the News 1
- ZDI-26-705: (0Day) BusyBox libarchive Symlink Directory Traversal Arbitrary File Creation Vulnerability Zero Day Initiative: published advisories · 2026-09-16
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 4
- StatusPublished → Awaiting AnalysisNVD modified 2026-10-22 17:34
- StatusReceived → PublishedNVD modified 2026-10-21 17:17
- StatusPublished → ReceivedNVD modified 2026-10-21 18:17
- First seenCVSS 6.1 · busyboxNVD modified 2026-10-21 17:17
Affected (CPE criteria) 0
NVD has not attached CPE configurations yet.