IGEL OS Use of a Key Past its Expiration Date Vulnerability
n/a — n/a
In IGEL OS before 11, Secure Boot can be bypassed because the igel-flash-driver module improperly verifies a cryptographic signature. Ultimately, a crafted root filesystem can be mounted from an unverified SquashFS image.
4.6
4.0%
Vector breakdown
- Attack vector
- Physical
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Published
- Jun 5, 2025
- Modified
- Feb 26, 2026
- Added to KEV
- Oct 14, 2025
- Federal patch due
- Nov 4, 2025
CISA required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Weakness classification
Proof-of-concept & exploitation references
Weaponization
Public repositories whose name or description references CVE-2025-47827, found via a live GitHub search at request time. These are community-sourced signals, not a verified working exploit — cross-check each one before relying on it, and treat higher star counts and recent activity as (weak) corroboration, not proof.
No public GitHub repositories referencing CVE-2025-47827 were found at last check. Absence here is not proof no exploit exists — see the references below for vendor advisories and write-ups.
References
How this class of flaw gets exploited
Frequently asked questions
What is CVE-2025-47827?
In IGEL OS before 11, Secure Boot can be bypassed because the igel-flash-driver module improperly verifies a cryptographic signature. Ultimately, a crafted root filesystem can be mounted from an unverified SquashFS image.
How severe is CVE-2025-47827?
CVE-2025-47827 has a CVSS base score of 4.6 out of 10 (CVSS 3.1).
Is CVE-2025-47827 actively exploited in the wild?
Yes. CVE-2025-47827 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added Oct 14, 2025, meaning CISA has confirmed evidence of active exploitation.
What is the EPSS score for CVE-2025-47827?
4.0% - meaning FIRST.org's EPSS model estimates a 4.0% probability this vulnerability will be exploited in the wild within 30 days (90% percentile among all scored CVEs).
What type of vulnerability is CVE-2025-47827?
CVE-2025-47827 is classified under CWE-347 (CWE-347 Improper Verification of Cryptographic Signature).
Cross-checked against
Impactr finds and proves whether CVE-2025-47827 — or flaws like it — are actually reachable in your own web apps and APIs, with a reproducible exploit as evidence.