CVE-2025-47827: in the CISA KEV catalogue

IGEL OS Use of a Key Past its Expiration Date Vulnerability. CISA added CVE-2025-47827 to the Known Exploited Vulnerabilities catalogue on 2025-10-14 with a default due date of 2025-11-04. Known ransomware campaign use: Unknown. Forensic triage flag: No.

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 description)

Vendor / product: IGEL IGEL OS
CWE: CWE-324
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.
EPSS: 5.2%, percentile 92 (scored 2026-11-04)

EPSS puts about 5.2 in 100 odds (5.2%) on exploitation activity being observed in the next 30 days. Its score is higher than or equal to that of 92% of scored CVEs. This is a model estimate about exploitation anywhere, not about your environment.

Vendor and reference links (from CISA)

Your own deadline under CISA BOD 26-04 depends on exposure, automatability and technical impact: work it out with the BOD 26-04 calculator.

Data dates. CISA KEV catalogue version 2026.11.04, released 2026-11-04, 1,768 entries (checked 2026-11-05). EPSS model v2026.06.15, scored 2026-11-04, 400,189 CVEs. Sources: CISA and FIRST (EPSS by FIRST; scores generated by Empirical Security). Copied to our own database and refreshed automatically; if a refresh fails, the previous copy keeps serving with its own date.

Frequently asked questions

Is CVE-2025-47827 in the CISA KEV catalogue?

Yes. CISA added CVE-2025-47827 (IGEL OS Use of a Key Past its Expiration Date Vulnerability) to the Known Exploited Vulnerabilities catalogue on 2025-10-14. CISA's default due date for it is 2025-11-04.

Is CVE-2025-47827 used in ransomware attacks?

CISA marks known ransomware campaign use as Unknown for CVE-2025-47827. That means CISA lacks confirmation, not that ransomware groups do not use it.

What should I do about CVE-2025-47827?

CISA's 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.

Sources

CISA, Known Exploited Vulnerabilities Catalog (accessed 2026-11-03)
FIRST, Exploit Prediction Scoring System (EPSS) (EPSS by FIRST; scores generated by Empirical Security)
NVD record for CVE-2025-47827