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Vulnerabilities

Vulnerability · CVE-2025-47827

IGEL OS Use of a Key Past its Expiration Date Vulnerability

Published Jun 5, 2025 · catalog updated Jun 17, 2026 · IGEL OS Use of

Patch now

CVE-2025-47827 is in the CISA known-exploited catalog, due Nov 4, 2025. Confirm IGEL OS Use of against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (IGEL OS Use of).
  • No version range is stored. A customer cannot check an installed version against this record.
Severity
Medium4.6
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
4.93%
Remediation
Remediation guidance
Affected products
cpe igel/igel os · cpe microsoft/windows 10 1507 · cpe microsoft/windows 10 1607 · cpe microsoft/windows 10 1809 · cpe microsoft/windows 10 21h2 · vendor IGEL IGEL OS

IGEL OS contains a use of a key past its expiration date vulnerability that allows for Secure Boot bypass. The igel-flash-driver module improperly verifies a cryptographic signature. Ultimately, a crafted root filesystem can be mounted from an unverified SquashFS image.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe igel/igel osversion unspecified
  • cpe microsoft/windows 10 1507version unspecified
  • cpe microsoft/windows 10 1607version unspecified
  • cpe microsoft/windows 10 1809version unspecified
  • cpe microsoft/windows 10 21h2version unspecified
  • vendor IGEL IGEL OSversion unspecified
  • vendor n/a n/a n/an/a

How to fix CVE-2025-47827

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2025-47827 is in the CISA known-exploited catalog, due Nov 4, 2025. Confirm IGEL OS Use of against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Compare what you have installed with n/a n/a n/a n/a. Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

What should an analyst verify?

CWE-324; CWE-347: Improper Verification of Cryptographic Signature. EPSS 4.93%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Windows security

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Jun 5, 2025 · Catalog

    Detected

    IGEL OS contains a use of a key past its expiration date vulnerability that allows for Secure Boot bypass. The igel-flash-driver module improperly verifies a cryptographic signature. Ultimately, a crafted root filesystem can be mounted from an unverified SquashFS image.

  2. Oct 14, 2025 · CISA KEV

    Known exploited

    Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

  3. Nov 4, 2025 · CISA KEV

    Remediation due

    Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

  4. Jun 17, 2026 · Catalog

    Updated

    IGEL OS contains a use of a key past its expiration date vulnerability that allows for Secure Boot bypass. The igel-flash-driver module improperly verifies a cryptographic signature. Ultimately, a crafted root filesystem can be mounted from an unverified SquashFS image.

Sources

  • CISA KEVConfirmed exploitationCVE-2025-47827

    IGEL OS contains a use of a key past its expiration date vulnerability that allows for Secure Boot bypass. The igel-flash-driver module improperly verifies a cryptographic signature. Ultimately, a crafted root filesystem can be mounted from an unverified SquashFS image.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2025-47827

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-47827

    30-day exploitation probability 4.9%

    first.org
  • EUVDVulnerability recordEUVD-2025-16999

    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.

    euvd.enisa.europa.eu
  • NIST NVDVulnerability recordCVE-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.

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2025-47827

    IGEL OS contains a use of a key past its expiration date vulnerability that allows for Secure Boot bypass. The igel-flash-driver module improperly verifies a cryptographic signature. Ultimately, a crafted root filesystem can be mounted from an unverified SquashFS image.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.