CVE-2026-26158: Red Hat Enterprise Linux 6

High severity, CVSS 7.0. EPSS: 0.2% chance of exploitation in the next 30 days.

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.

Affected products

• Red Hat Red Hat Enterprise Linux 6
• Red Hat Red Hat Hardened Images: before 1.37.0-7.2.hum1 (fixed in 1.37.0-7.2.hum1)
• Siemens Ruggedcom RST2428P: before V4.0 (fixed in V4.0)

Published 2026-02-11. Last modified 2026-07-15.