Vulnerability Intelligence Report
IGEL OS 12 / 11 Secure Boot Bypass via Unsigned igel.conf File
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.
No Active Exploit Signals
CVSS Base Score
6.8
MEDIUM
EPSS Probability:0.18%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-636 ↗Not Failing Securely ('Failing Open')
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| IGEL | IGEL OS 12 | 12.0.0 <= 12.8.2 (affected), 12.8.3 (unaffected), 12.9.0 (unaffected) |
| IGEL | IGEL OS 11 | 11.0.0 < 11.11.150 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
0.175%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | VulnCheck · Bug Bounty Provider · USA |
| Reserved | 2026-08-27T21:39:20 |
| Published | 2026-08-28T21:11:24 |
| Patch Date | 2026-06-17 |
| Last Updated | 2026-09-02T18:46:41 |
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