CVE-2025-47827

8.4

HIGH CVSS 3.1

IGEL OS Use of a Key Past its Expiration Date Vulnerability - [Actively Exploited]

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.

INFO

Published Date :

June 5, 2025, 2:15 p.m.

Last Modified :

Oct. 21, 2025, 11:17 p.m.

Remotely Exploit :

No

Source :

[email protected]

CISA Notification

CISA KEV (Known Exploited Vulnerabilities)

For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild.

Due Date: Nov 04, 2025

Alert Date: Oct 14, 2025 | 21 days ago

Description :

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.

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.

Notes :

https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2025-47827 ; https://nvd.nist.gov/vuln/detail/CVE-2025-47827

Affected Products

The following products are affected by CVE-2025-47827 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID	Vendor	Product
1	Microsoft	windows_server_2012
2	Microsoft	windows_server_2016
3	Microsoft	windows_server_2019
4	Microsoft	windows_10_1607
5	Microsoft	windows_10_1809
6	Microsoft	windows_10_21h2
7	Microsoft	windows_10_22h2
8	Microsoft	windows_server_2022
9	Microsoft	windows_11_22h2
10	Microsoft	windows_10_1507
11	Microsoft	windows_11_23h2
12	Microsoft	windows_server_2022_23h2
13	Microsoft	windows_11_24h2
14	Microsoft	windows_server_2025
15	Microsoft	windows_11_25h2
1	Igel	igel_os

: Total Affected Vendor : 2 | Products : 16

CVSS Scores

The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.

Score	Version	Severity	Vector	Exploitability Score	Impact Score	Source
	CVSS 3.1	HIGH				134c704f-9b21-4f2e-91b3-4a467353bcc0
	CVSS 3.1	MEDIUM				134c704f-9b21-4f2e-91b3-4a467353bcc0

Solution

Update IGEL OS to version 11 or later to resolve Secure Boot bypass.

Update IGEL OS to version 11 or later.
Ensure proper verification of cryptographic signatures.
Mount only verified SquashFS images.

Public PoC/Exploit Available at Github

CVE-2025-47827 has a 2 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-47827.

URL	Resource
https://github.com/Zedeldi/CVE-2025-47827	Exploit Third Party Advisory
https://github.com/Zedeldi/igelfs	Product
https://github.com/Zedeldi/CVE-2025-47827	Exploit Third Party Advisory
https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2025-47827	Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-47827

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-47827 is associated with the following CWEs:

CWE-347: Improper Verification of Cryptographic Signature

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-47827 weaknesses.

CAPEC-463: Padding Oracle Crypto Attack Padding Oracle Crypto Attack CAPEC-475: Signature Spoofing by Improper Validation Signature Spoofing by Improper Validation

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Zedeldi/CVE-2025-47827

PoC and vulnerability report for CVE-2025-47827.

cve igel secure-boot cve-2025-47827 isn-2025-22 vulnerability kexec igel-flash-driver cwe-347

Shell

Updated: 1 week ago

2 stars 2 fork 2 watcher

Born at : May 20, 2025, 10:42 a.m. This repo has been linked 2 different CVEs too.

nomi-sec/PoC-in-GitHub

📡 PoC auto collect from GitHub. ⚠️ Be careful Malware.

security cve exploit poc vulnerability

Updated: 2 days, 12 hours ago

7360 stars 1212 fork 1212 watcher

Born at : Dec. 8, 2019, 1:03 p.m. This repo has been linked 832 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-47827 vulnerability anywhere in the article.

CrowdStrike.com

October 2025 Patch Tuesday: Two Publicly Disclosed, Three Zero-Days, and Eight Critical Vulnerabilities Among 172 CVEs

Microsoft has addressed 172 vulnerabilities in its October 2025 security update release, marking the highest number of vulnerabilities patched in a single month this year. This month's patches address ...

Published Date: Oct 28, 2025 (1 week ago)

CrowdStrike.com

October 2025 Patch Tuesday: Two Publicly Disclosed, Three Zero-Days, and Eight Critical Vulnerabilities Among 172 CVEs

Published Date: Oct 27, 2025 (1 week ago)

CrowdStrike.com

October 2025 Patch Tuesday: Two Publicly Disclosed, Three Zero-Days, and Eight Critical Vulnerabilities Among 172 CVEs

Published Date: Oct 27, 2025 (1 week ago)

CrowdStrike.com

October 2025 Patch Tuesday: Two Publicly Disclosed, Three Zero-Days, and Eight Critical Vulnerabilities Among 172 CVEs

Published Date: Oct 27, 2025 (1 week ago)

CrowdStrike.com

October 2025 Patch Tuesday: Two Publicly Disclosed, Three Zero-Days, and Eight Critical Vulnerabilities Among 172 CVEs

Published Date: Oct 27, 2025 (1 week ago)

CrowdStrike.com