Bypass of Secure Boot in IGEL OS by improper signature verification
CVE-2025-47827

4.6MEDIUM

Key Information:

Vendor

IGEL Technology

Status
IGEL OS
Vendor
CVE Published:
5 June 2025

Badges

👾 Exploit Exists🟣 EPSS 16%🦅 CISA Reported📰 News Worthy

What is CVE-2025-47827?

In affected versions of IGEL OS, the igel-flash-driver module has a security flaw that allows an attacker to bypass Secure Boot. This occurs due to the module's failure to properly verify the cryptographic signature of the root filesystem. As a result, an unverified SquashFS image can be mounted, potentially leading to unauthorized access and exposing systems to various security threats.

CISA has reported CVE-2025-47827

CISA provides regional cyber and physical services to support security and resilience across the United States. CISA monitor the most dangerious vulnerabilities and have identifed CVE-2025-47827 as being exploited but is not known by the CISA to be used in ransomware campaigns. This is subject to change at pace

The CISA's recommendation is: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

News Articles

favicon imageSecurity Affairs

U.S. CISA adds SKYSEA Client View, Rapid7 Velociraptor, Microsoft Windows, and IGEL OS flaws to its Known Exploited Vulnerabilities catalog

U.S. CISA adds OracSKYSEA Client View, Rapid7 Velociraptor, Windows, and IGEL OS flaws to its Known Exploited Vulnerabilities catalog.

References

https://github.com/Zedeldi/igelfs
https://github.com/Zedeldi/CVE-2025-47827

EPSS Score

16% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
4.6
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Physical
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 📰

    First article discovered by Security Affairs

  • 👾

    Exploit known to exist

  • 🦅

    CISA Reported

  • Vulnerability published

  • Vulnerability Reserved

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