Vulnerability in Igel OS 11
CVE-2026-82018
IGEL OS 12 before 12.9.0, 12.8.3 LTS and IGEL OS 11 before 11.11.150 contain a secure boot bypass vulnerability in the GRUB boot stage that allows physically present attackers to gain unauthorized root access by placing an unsigned empty file named igel.conf on a partition. Attackers can exploit GRUB's fail-open signature verification behavior to drop into an interactive GRUB prompt, then boot the device's own kernel with additional command-line arguments to obtain a root shell with the disk unlocked while leaving TPM PCR values unaltered.
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
Affected products
Weakness classification (CWE)
References
- disclosure@vulncheck.com (vendor-advisory, patch)
- disclosure@vulncheck.com (technical-description)
- disclosure@vulncheck.com
- disclosure@vulncheck.com (third-party-advisory)
Frequently asked questions
- What is CVE-2026-82018?
- CVE-2026-82018 is a medium-severity vulnerability in Igel OS 11, classified under CWE-636. CVSS score: 6.1/10. Published 2026-08-28.
- How severe is CVE-2026-82018?
- Medium severity. CVSS v3 base score is 6.1 out of 10.