What’s Vulnerable › Vulnerabilities

CVE-2026-82017: IGEL OS 12 / 11 Boot Registry Parameter Injection via Unsigned Configuration Area

• Severity: high (CVSS 7.6 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-28 · updated 2026-09-24
• Weakness: CWE-345

Description

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.

Affected products

• IGEL OS 11: from 11.0.0 before 11.11.150 — fixed in 11.11.150
• IGEL OS 12: from 12.0.0 before 12.7.6 — fixed in 12.7.6

How to fix

Upgrade to a fixed version: IGEL OS 11 11.11.150; IGEL OS 12 12.7.6. Check the vendor advisory for mitigations.

References

• https://blog.amberwolf.com/blog/2026/august/thin-client-thin-crypto-overview/
• https://github.com/AmberWolfCyber/DEFCON34-ThinClientThinCrypto/blob/main/scripts/igel/inject_bootreg.py
• https://kb.igel.com/en/security-safety/current/isn-2026-19-code-execution-via-boot-registry
• https://media.defcon.org/DEF%20CON%2034/DEF%20CON%2034%20presentations/DEF%20CON%2034%20presentations/DEF%20CON%2034%20-%20Darren%20McDonald%20-%20Thin%20Client%20Thin%20Crypto%20-%20Bypassing%20Full-Desk%20Encryption%20Across%20Three%20Major%20Thin%20Clients%20Vendors%20without%20Breaking%20a%20Ci.pdf
• https://www.vulncheck.com/advisories/igel-os-12-11-boot-registry-parameter-injection-via-unsigned-configuration-area

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