CVE-2026-26158
HIGH EPSS 5.6%
Published Feb 11, 20264mo ago · Modified Jun 2, 20264w ago
7.0 CVSS 3.1
Published Feb 11, 2026 4mo ago
Last Modified Jun 2, 2026 4w ago
Description
A flaw was found in BusyBox. This vulnerability allows an attacker to modify files outside of the intended extraction directory by crafting a malicious tar archive containing unvalidated hardlink or symlink entries. If the tar archive is extracted with elevated privileges, this flaw can lead to privilege escalation, enabling an attacker to gain unauthorized access to critical system files.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H Attack Vector Local
Attack Complexity High
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality High
Integrity High
Availability High
Threat Intelligence
EPSS Exploit Probability
5.6% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-73
References 5
- access.redhat.com https://access.redhat.com/errata/RHSA-2026:13831
- access.redhat.com https://access.redhat.com/security/cve/CVE-2026-26158
- bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=2439040
- cert-portal.siemens.com https://cert-portal.siemens.com/productcert/html/ssa-253495.html
- git.busybox.net https://git.busybox.net/busybox/commit/archival?id=3fb6b31c716669e12f75a2accd31bb7685b1a1cb
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.