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Vulnerabilities/CVE-2025-47827Public Intelligence Dossier
Source: igel · Limited verification•Last verified: •Collection Degraded
CVE-2025-47827ListedMEDIUM (raw)CVSS 4.6CWE-347

In IGEL OS before 11, Secure Boot can be bypassed because the igel-flash-driver module improperly verifies a cryptographic signature

Published: 05 Jun 2025•Last updated: 17 Jun 2026, 02:58 PM IST•Source identifier: cve@mitre.org
Dossier completeness: source-provided sections 3 / 3 · rule guidance not available. Missing source facts count as incomplete.
Official source
CISA KEV catalog
Listed
Added14 Oct 2025
Due04 Nov 2025
RansomwareUnknown
CVSS score
4.6MEDIUM (raw)
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Metric source134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS probability
4.9%0.049
Percentile92nd
Weakness type
CWE-347
No further CWE recorded
Remediation
Patch status unknown
No fixed version or KB recorded

Why It Matters

Analysis dossier

Why It Matters

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.

SOC priority

Immediate Attention

Actively exploited

Yes

Publicly disclosed

Unknown

Risk basis: CISA KEV exploitation signal; Microsoft or Microsoft-managed product relevance; Known exploitation signal from CISA KEV or ransomware metadata

Affected Products & Remediation

16 source-backed products
Affected products and versions (source)
  • igel igel os · < 11.01.100 · NVD CPE · Source
  • microsoft windows 10 1507 · < 10.0.10240.21161 · NVD CPE · Source
  • microsoft windows 10 1607 · < 10.0.14393.8519 · NVD CPE · Source
  • microsoft windows 10 1809 · < 10.0.17763.7919 · NVD CPE · Source
  • microsoft windows 10 21h2 · < 10.0.19044.6456 · NVD CPE · Source
  • microsoft windows 10 22h2 · < 10.0.19045.6456 · NVD CPE · Source
  • microsoft windows 11 22h2 · < 10.0.22621.6060 · NVD CPE · Source
  • microsoft windows 11 23h2 · < 10.0.22631.6060 · NVD CPE · Source
  • microsoft windows 11 24h2 · < 10.0.26100.6899 · NVD CPE · Source
  • microsoft windows 11 25h2 · < 10.0.26200.6899 · NVD CPE · Source
  • microsoft windows server 2012 · r2 · NVD CPE · Source
  • microsoft windows server 2016 · < 10.0.14393.8519 · NVD CPE · Source
  • microsoft windows server 2019 · < 10.0.17763.7919 · NVD CPE · Source
  • microsoft windows server 2022 · < 10.0.20348.4294; 23h2 < 10.0.25398.1913 · NVD CPE · Source
  • microsoft windows server 2022 23h2 · < 10.0.25398.1913 · NVD CPE · Source
  • microsoft windows server 2025 · < 10.0.26100.6899 · NVD CPE · Source
Recorded patch / KBNot provided by source

Vendor or catalog guidance (source)

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

Known exploitation (source facts)

Only what a source states. Unknown means no source has said either way; it is not "not exploited".

CISA KEV
Listed
Exploited (source statement)
Yes
Publicly disclosed (source)
Unknown

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.

Suggested hunting (rule-based inference)

SecOps Signal recommendation (rule-based inference). These steps are hunting hypotheses from the vulnerability class; they do not state or imply that exploitation occurred here or anywhere.

No rule-based guidance for this vulnerability class

CISA KEV Record

Catalog entry
14 Oct 2025
Required action due
04 Nov 2025
Known ransomware use
Unknown

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

Change History & Source Data

— No recorded material change

CNA / source
cve@mitre.org
Record status · verification
UPDATED · Microsoft primary source linked; CISA KEV confirmed
CPE
cpe:2.3:o:igel:igel_os:*:*:*:*:*:*:*:*, cpe:2.3:o:microsoft:windows_10_1507:*:*:*:*:*:*:x64:*, cpe:2.3:o:microsoft:windows_10_1507:*:*:*:*:*:*:x86:*, cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:*, cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:*, cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*, cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*, cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:*:*, cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:*:*, cpe:2.3:o:microsoft:windows_11_22h2:*:*:*:*:*:*:*:*

Evidence & Provenance

4 public sources
CISA KEV CatalogAdded 2025-10-14msrc.microsoft.comSource recordnvd.nist.govSource recordgithub.comSource record

Linked by the query's stored exact CVE association. Review required tables and validation status before use.

Detection Hunting Query
Target: DeviceTvmSoftwareVulnerabilities•Defender XDR
Detect endpoints exposed to CVE-2025-47827
Purpose: Exposure assessment (Category: Exposure Check)Why linked: Query metadata names CVE-2025-47827
DeviceTvmSoftwareVulnerabilities| where CveId == "CVE-2025-47827"| project DeviceId, DeviceName, OSPlatform, OSVersion, SoftwareVendor, SoftwareName, SoftwareVersion, CveId, VulnerabilitySeverityLevel, RecommendedSecurityUpdate, RecommendedSecurityUpdateId| sort by VulnerabilitySeverityLevel desc
Schema Checked · Not runtime validatedSource: SecOps Signal deterministic template · Limited verificationStatic screening: Passed structure and schema checks; tenant execution is not verified.
Open KQL Library
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Correlated briefings

SecOps Signal surfaces public advisory facts only. A missing value means the source has not published it, not that your environment is unaffected. No tenant inventory is connected.