Medium severity · published Oct 21, 2026
CVE-2026-92205
BusyBox libarchive Symlink Directory Traversal Arbitrary File Creation Vulnerability
New
6.1
CVSS
0.3%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:L
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
High
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 24% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BU
BusyBox · BusyBox
1.37.0 · source: vendor
In the news
VulnerabilityMedium
ZDI-26-705: (0Day) 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 ZDI has assigned a CVSS rating of 6.1. The following CVEs are assigned: CVE-2026-92205.
Sep 16, 2026·Zero Day Initiative
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-92205
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-92205
www.zerodayinitiative.com
https://www.zerodayinitiative.com/advisories/ZDI-26-705/
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