Threats / IGEL / CVE-2025-47827
CVE-2025-47827
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-06-22
IGEL OS vulnerability
IGEL OS contains a cryptographic signature verification flaw in the igel-flash-driver module that allows Secure Boot bypass via a crafted SquashFS image using an expired key.
Verdict
Today item — known-exploited.
An attacker can bypass Secure Boot protections by exploiting improper signature verification in IGEL OS, enabling installation of a malicious root filesystem. This vulnerability is actively exploited in the wild.
01
Is it exploitable?
— the evidence, ranked above the scoreReported exploitation
5 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-10-14).
Probability (EPSS)
EPSS 0.03528 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
Affected: IGEL, IGEL OS. Confirm exact fixed builds in the vendor advisory.
Weakness (CWE)
Mapped to CWE-324 CWE-324 — weakness family: Cryptography.CWE assignment from the public NVD record; the weakness class drives how the flaw is exploited.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I craft a malicious SquashFS image and sign it with an expired cryptographic key that the igel-flash-driver fails to properly validate.
Business
Device integrity controls are circumvented, allowing unauthorized code execution at the boot level.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I bypass Secure Boot mechanisms by mounting my crafted root filesystem during the boot process.
Business
Attackers gain persistent control over endpoint devices with administrative privileges.
3
Lateral reach — past segmentation narrative 3
Attacker
I establish a foothold on IGEL OS systems to deploy malware, steal credentials, or pivot to connected infrastructure.
Business
Enterprise endpoints become compromised, creating data breach and lateral movement risks across the organization.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05