CVE-2025-47827 IGEL IGEL OS: software flaw
In plain words: A mistake in the software that attackers have found a way to abuse. Depends on the product — see the description and the vendor advisory.
Confirmed exploited by CISA on · US federal patch deadline Nov 4, 2025
What to do
- Install IGEL's security update for IGEL OS. If no update exists, follow the vendor's workaround or stop using the product until one ships.
- Keep a list of every internet-facing server you run so nothing is forgotten.
- Patch anything in this catalog first, ahead of normal patch cycles.
- Put admin and file-transfer apps behind a VPN or single sign-on instead of the open internet.
Who is affected
Work IT. Aimed mostly at company systems — you are affected through the companies you use, not your own phone.
What's at risk: Mass data theft and ransomware: a single flaw in a file-transfer or email server has exposed thousands of organisations at once.
The details
- Official name
- IGEL OS Use of a Key Past its Expiration Date Vulnerability
- Product
- IGEL IGEL OS
- CISA 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.
- Type of flaw
- Software flaw (CWE-324)
- Confirmed exploited
- Oct 14, 2025
- US federal patch deadline
- Nov 4, 2025
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Answering about CVE-2025-47827 ·
Questions about CVE-2025-47827
Is CVE-2025-47827 being exploited?
Yes. CISA added CVE-2025-47827 to its Known Exploited Vulnerabilities catalog on Oct 14, 2025, which means there is reliable evidence of real-world attacks.
How do I fix CVE-2025-47827?
Install IGEL's security update for IGEL OS. If no update exists, follow the vendor's workaround or stop using the product until one ships. Keep a list of every internet-facing server you run so nothing is forgotten.
Am I affected by CVE-2025-47827?
Only if you use IGEL IGEL OS. Aimed mostly at company systems — you are affected through the companies you use, not your own phone.