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Verdict

MEDIUM SEVERITY (CVSS 6.1)

What is this: 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 phy… (CWE-636)
Should you care: Rated medium severity — CVSS 6.1.
What to do: Patch when able.

OBSERVEDMODERATE EVIDENCE COVERAGEDeterministic · stored evidence only

Vulnerability investigation

Prioritize by applicability, impact, and exploitation evidence

CISA KEV status could not be verified from the available evidence. NVD rates the technical severity medium at CVSS 6.1. These are public vulnerability signals, not proof that a specific environment runs an affected version.

Exploitation status

KEV status unavailable

The KEV source did not return a conclusive status.

30-day exploitation likelihood

Unavailable

FIRST EPSS did not return a score.

Technical severity

6.1 · medium

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

Affected surface

Product applicability incomplete

No structured product mapping is available.

Weakness class

CWE-636

CWE describes the weakness category, not whether a deployed product is reachable or exploitable.

Corpus evidence

1 connectors · 2 citations

No related report text is available in the local corpus.

What the evidence supports

Findings stay bounded to named sources and observable infrastructure.

1 finding

CVSS 6.1 medium technical impact

HIGH

Physical · Low · None

NIST NVD CVSS

CVSS measures technical severity and prerequisites; it does not measure observed exploitation likelihood.

What remains unknown

Whether your environment runs an affected product and version is not established by this public lookup.
Reachability, compensating controls, and successful exploitation in a specific environment are not checked.
No reliable product/version mapping is available, so applicability remains unresolved.
CISA KEV status is unavailable and must be retried before drawing an exploitation conclusion.
No locally ingested public report supplies exploit, actor, or campaign context for this CVE.

What this is

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.

Evidence readiness

The base CVE appears first. Independent evidence is added without blocking the page.

Investigation status

Checking for newly completed evidence

Refreshing

NIST NVD

NVD evidence is available in this response

Ready

CISA KEV

Known-exploitation catalog check is pending

Pending

FIRST EPSS

Forensia does not request or publish EPSS while source rights are under review

Rights pending

Reports

Report links are still being resolved

Pending

Relationships

Product and vulnerability relationships are still being prepared

Pending

related indicators · 14 connectors · 1

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