CVE-2025-47827

MEDIUM KEV

IGEL OS < 11 - Secure Boot Bypass via Improper Cryptographic Signature Verification

Title source: llm
STIX 2.1

Exploitation Summary

CVE-2025-47827 is actively exploited and listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added October 14, 2025. EIP tracks 1 public exploit from researchers including Zedeldi.

AI-analyzed exploit summary This repository provides a detailed technical analysis of CVE-2025-47827, a Secure Boot bypass vulnerability in IGEL OS before v11 due to improper cryptographic signature verification in the `igel-flash-driver` module. The writeup includes root cause analysis, boot process diagrams, and discussions on mitigation and impact.

Description

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.

Exploits (1)

nomisec WRITEUP 2 stars
by Zedeldi · poc
https://github.com/Zedeldi/CVE-2025-47827

This repository provides a detailed technical analysis of CVE-2025-47827, a Secure Boot bypass vulnerability in IGEL OS before v11 due to improper cryptographic signature verification in the `igel-flash-driver` module. The writeup includes root cause analysis, boot process diagrams, and discussions on mitigation and impact.

Classification
Writeup 95%
Attack Type
Auth Bypass
Complexity
Moderate
Reliability
Reliable
Target: IGEL OS before v11
No auth needed
Prerequisites: Physical access or local execution · Microsoft 3rd Party UEFI CA trusted on the target machine
devstral-2 · analyzed Feb 18, 2026 Full analysis →

References (4)

Core 4

Scores

CVSS v3 4.6
EPSS 0.0092
EPSS Percentile 76.5%
Attack Vector PHYSICAL
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation active
Automatable no
Technical Impact partial

Details

CISA KEV 2025-10-14
VulnCheck KEV 2025-10-14
ENISA EUVD EUVD-2025-16999
CWE
CWE-347
Status published
Products (17)
igel/igel_os < 11.01.100
microsoft/windows_10_1507 < 10.0.10240.21161 (2 CPE variants)
microsoft/windows_10_1607 < 10.0.14393.8519 (2 CPE variants)
microsoft/windows_10_1809 < 10.0.17763.7919 (2 CPE variants)
microsoft/windows_10_21h2 < 10.0.19044.6456
microsoft/windows_10_22h2 < 10.0.19045.6456
microsoft/windows_11_22h2 < 10.0.22621.6060
microsoft/windows_11_23h2 < 10.0.22631.6060
microsoft/windows_11_24h2 < 10.0.26100.6899
microsoft/windows_11_25h2 < 10.0.26200.6899
... and 7 more
Published Jun 05, 2025
KEV Added Oct 14, 2025
Tracked Since Feb 18, 2026