Vulnerability in Red Hat Enterprise Linux 6
CVE-2026-26158
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.
EPSS: 0.002 (5.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Red Hat Enterprise Linux 6
- Red Hat Hardened Images — versions 1.37.0-7.2.hum1
Weakness classification (CWE)
References
- secalert@redhat.com (x_refsource_REDHAT, vdb-entry)
- secalert@redhat.com (x_refsource_REDHAT, issue-tracking)
- secalert@redhat.com
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
- 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Frequently asked questions
- What is CVE-2026-26158?
- CVE-2026-26158 is a high-severity vulnerability in Red Hat Enterprise Linux 6, classified under External Control of File Name or Path. CVSS score: 7.0/10. Published 2026-02-11.
- How severe is CVE-2026-26158?
- High severity. CVSS v3 base score is 7.0 out of 10.