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CVE-2026-82018 (GCVE-0-2026-82018)

Vulnerability from nvd – Published: 2026-08-28 21:11 – Updated: 2026-09-02 18:46

Title

IGEL OS 12 / 11 Secure Boot Bypass via Unsigned igel.conf File

Summary

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.

Severity

6.8 (Medium)


                        
                          CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

6.1 (Medium)


                        
                          CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-02 18:46 UTC

CWE

CWE-636 - Not Failing Securely ('Failing Open')

Assigner

VulnCheck mitre root

References

4 references

URL	Tags
https://kb.igel.com/en/security-safety/current/is…	vendor-advisorypatch
https://blog.amberwolf.com/blog/2026/august/thin-…	technical-description
https://media.defcon.org/DEF%20CON%2034/DEF%20CON…
https://www.vulncheck.com/advisories/igel-os-12-1…	third-party-advisory

Impacted products

2 products

Vendor	Product	Version
IGEL	IGEL OS 12	Affected: 12.0.0 , ≤ 12.8.2 (semver) Unaffected: 12.8.3 (semver) Unaffected: 12.9.0 (semver)
IGEL	IGEL OS 11	Affected: 11.0.0 , < 11.11.150 (semver)

Date Public

2026-06-17 00:00

Credits

Darren McDonald from AmberWolf

Show details on NVD website

JSON

To clipboard

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          "url": "https://blog.amberwolf.com/blog/2026/august/thin-client-thin-crypto-overview/"
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        },
        {
          "tags": [
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          ],
          "url": "https://www.vulncheck.com/advisories/igel-os-12-11-secure-boot-bypass-via-unsigned-igel-conf-file"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
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      "title": "IGEL OS 12 / 11 Secure Boot Bypass via Unsigned igel.conf File",
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    "dateReserved": "2026-08-27T21:39:20.459Z",
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    "state": "PUBLISHED"
  },
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CVE-2026-82017 (GCVE-0-2026-82017)

Vulnerability from nvd – Published: 2026-08-28 21:09 – Updated: 2026-08-31 18:46

Title

IGEL OS 12 / 11 Boot Registry Parameter Injection via Unsigned Configuration Area

Summary

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.

Severity

8.6 (High)


                        
                          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

7.6 (High)


                        
                          CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

SSVC

Exploitation: poc Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-31 18:46 UTC

CWE

CWE-345 - Insufficient Verification of Data Authenticity

Assigner

VulnCheck mitre root

References

5 references

URL	Tags
https://kb.igel.com/en/security-safety/current/is…	vendor-advisorypatch
https://blog.amberwolf.com/blog/2026/august/thin-…	technical-description
https://media.defcon.org/DEF%20CON%2034/DEF%20CON…
https://github.com/AmberWolfCyber/DEFCON34-ThinCl…	exploit
https://www.vulncheck.com/advisories/igel-os-12-1…	third-party-advisory

Impacted products

2 products

Vendor	Product	Version
IGEL	IGEL OS 12	Affected: 12.0.0 , < 12.7.6 (semver)
IGEL	IGEL OS 11	Affected: 11.0.0 , < 11.11.150 (semver)

Date Public

2026-06-16 00:00

Credits

Darren McDonald from AmberWolf

Show details on NVD website

JSON

To clipboard

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CVE-2026-82018 (GCVE-0-2026-82018)

Vulnerability from cvelistv5 – Published: 2026-08-28 21:11 – Updated: 2026-09-02 18:46

Title

IGEL OS 12 / 11 Secure Boot Bypass via Unsigned igel.conf File

Summary

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.

Severity

6.8 (Medium)


                        
                          CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

6.1 (Medium)


                        
                          CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-02 18:46 UTC

CWE

CWE-636 - Not Failing Securely ('Failing Open')

Assigner

VulnCheck mitre root

References

4 references

URL	Tags
https://kb.igel.com/en/security-safety/current/is…	vendor-advisorypatch
https://blog.amberwolf.com/blog/2026/august/thin-…	technical-description
https://media.defcon.org/DEF%20CON%2034/DEF%20CON…
https://www.vulncheck.com/advisories/igel-os-12-1…	third-party-advisory

Impacted products

2 products

Vendor	Product	Version
IGEL	IGEL OS 12	Affected: 12.0.0 , ≤ 12.8.2 (semver) Unaffected: 12.8.3 (semver) Unaffected: 12.9.0 (semver)
IGEL	IGEL OS 11	Affected: 11.0.0 , < 11.11.150 (semver)

Date Public

2026-06-17 00:00

Credits

Darren McDonald from AmberWolf

Show details on NVD website

JSON

To clipboard

{
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          "type": "finder",
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        }
      ],
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CVE-2026-82017 (GCVE-0-2026-82017)

Vulnerability from cvelistv5 – Published: 2026-08-28 21:09 – Updated: 2026-08-31 18:46

Title

IGEL OS 12 / 11 Boot Registry Parameter Injection via Unsigned Configuration Area

Summary

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.

Severity

8.6 (High)


                        
                          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

7.6 (High)


                        
                          CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

SSVC

Exploitation: poc Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-31 18:46 UTC

CWE

CWE-345 - Insufficient Verification of Data Authenticity

Assigner

VulnCheck mitre root

References

5 references

URL	Tags
https://kb.igel.com/en/security-safety/current/is…	vendor-advisorypatch
https://blog.amberwolf.com/blog/2026/august/thin-…	technical-description
https://media.defcon.org/DEF%20CON%2034/DEF%20CON…
https://github.com/AmberWolfCyber/DEFCON34-ThinCl…	exploit
https://www.vulncheck.com/advisories/igel-os-12-1…	third-party-advisory

Impacted products

2 products

Vendor	Product	Version
IGEL	IGEL OS 12	Affected: 12.0.0 , < 12.7.6 (semver)
IGEL	IGEL OS 11	Affected: 11.0.0 , < 11.11.150 (semver)

Date Public

2026-06-16 00:00

Credits

Darren McDonald from AmberWolf

Show details on NVD website

JSON

To clipboard

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Find a vulnerability

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4 vulnerabilities found for IGEL OS 12 by IGEL

CVE-2026-82018 (GCVE-0-2026-82018)

CVE-2026-82017 (GCVE-0-2026-82017)

CVE-2026-82018 (GCVE-0-2026-82018)

CVE-2026-82017 (GCVE-0-2026-82017)

Find a vulnerability

Search criteria ⓘ Use this form to refine search results. Full-text search supports keyword queries with ranking and filtering. You can combine vendor, product, and sources to narrow results. Enable “Apply ordering” to sort by date instead of relevance.

4 vulnerabilities found for IGEL OS 12 by IGEL

CVE-2026-82018 (GCVE-0-2026-82018)

CVE-2026-82017 (GCVE-0-2026-82017)

CVE-2026-82018 (GCVE-0-2026-82018)

CVE-2026-82017 (GCVE-0-2026-82017)

Search criteria ⓘ Use this form to refine search results.
Full-text search supports keyword queries with ranking and filtering.
You can combine vendor, product, and sources to narrow results.
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