EUVD-2026-67961
GHSA-jh8x-f5g5-w4rq
Severity by source
CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Physical access required (AV:P); no privileges needed to write unencrypted partition (PR:N); scope changes because boot-environment execution affects encrypted storage beyond the OS itself (S:C).
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
3DescriptionCVE.org
IGEL OS 12 before 12.7.6 and IGEL OS 11 before 11.11.150 contain a boot registry parameter injection vulnerability that allows attackers with physical access to execute arbitrary Linux loader parameters by writing to an unencrypted and unsigned configuration area read by the signed bootloader. Attackers can inject malicious kernel command line parameters that execute with boot environment privileges without triggering TPM PCR measurement failures, as the attack does not modify the measured boot code.
AnalysisAI
Boot registry parameter injection in IGEL OS 12 (before 12.7.6) and IGEL OS 11 (before 11.11.150) allows an attacker with physical access to execute arbitrary Linux kernel command-line parameters by writing to an unencrypted, unsigned configuration partition that the signed bootloader reads at startup. The attack is particularly dangerous because it does not alter the measured boot code path, meaning TPM PCR attestation does not detect the tampering - effectively defeating the trust assumptions of the secure boot and full-disk encryption stack. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Physical access to the IGEL OS device is required - this is confirmed by AV:P in the CVSS 4.0 vector and is the hard prerequisite. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 vector (AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H) scores 8.6, which is appropriate: the impact metrics are severe, reflecting full control over the boot environment and likely access to encrypted data. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | The primary fix is to upgrade IGEL OS 12 to version 12.7.6 or later, and IGEL OS 11 to version 11.11.150 or later, per vendor advisory ISN-2026-19 at https://kb.igel.com/en/security-safety/current/isn-2026-19-code-execution-via-boot-registry. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Immediately inventory all IGEL OS 12 and OS 11 deployments to determine exposure scope, prioritizing endpoints with administrative or sensitive data access. …
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External POC / Exploit Code
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