CVE intelligence and bounded remediation

CVE-2025-47827 — IGEL OS Use of a Key Past its Expiration Date Vulnerability

Medium CVSS 4.6 CISA KEV

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.

Severity
Medium
CVSS
4.6 (3.1)
Published
2025-06-05
CISA KEV
Known exploited
Ecosystem
operating-system
Weaknesses
CWE-347

Affected products

  • igel / igel_os
  • microsoft / windows_10_1507
  • microsoft / windows_10_1607
  • microsoft / windows_10_1809
  • microsoft / windows_10_21h2
  • microsoft / windows_10_22h2

Showing 6 representative product identities from 20 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Cryptography, certificate, signature, and channel validation

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Inventory affected algorithms, key uses, trust stores, certificate validation settings, random sources, and plaintext channels across clients and services.
  • Determine which secrets, identities, signatures, or data protections depend on the affected primitive or validation path.
  • Check debug, compatibility, fallback, and hostname or audience override settings in build and runtime configuration.

Remediate safely

  • Use a maintained platform cryptographic API with approved algorithms, modes, parameters, randomness, and full peer identity validation.
  • Remove insecure fallback and validation bypasses; separate keys by purpose and load them from managed secret storage.
  • Plan rotation or reissuance for affected keys, certificates, tokens, hashes, or ciphertext and document compatibility sequencing.

Authoritative sources

Complete CVE record and remediation plan

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