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Fencer Vulns
medium 6.1

CVE-2026-92205 json

BusyBox libarchive Symlink Directory Traversal Arbitrary File Creation Vulnerability

published 2026-10-21 18 d ago modified 2026-10-30 9 d ago also EUVD-2026-107403

cvss
6.1
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 24%
public exploits
0
none known

Summary

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.

Patch / fix

  • busybox openSUSE Tumbleweed 1.38.0-4.1

opensuse advisories openSUSE-SU-2026:12376-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-92205 updated cvss 6.1

busybox: busybox: Arbitrary file creation via directory traversal

  • Red Hat Advanced Cluster Security 4 advanced-cluster-security/rhacs-scanner-rhel8, advanced-cluster-security/rhacs-scanner-rhel9, advanced-cluster-security/rhacs-scanner-slim-rhel8, advanced-cluster-security/rhacs-scanner-slim-rhel9 Red Hat Enterprise Linux 6 busybox, busybox-petitboot
    affected: workaround, no fix available “Fix deferred”
  • Red Hat Hardened Images busybox 1.37.0-9.4.hum1, busybox-shared 1.37.0-9.4.hum1, busybox-petitboot 1.37.0-9.4.hum1
    fixed: vendor fix RHSA-2026:81391

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
9 d ago

Exploit prediction

0.31% chance of exploitation in the next 30 days, higher than 24% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.0 6.1 CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:L

Affected products

  • BusyBox BusyBox

Classification

Weakness
  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.