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. This vulnerability has been assigned a CVSS score of 4.6, indicating a medium severity level. The risk to organizations includes potential unauthorized access to system resources and integrity breaches.
The exploitation status for CVE-2025-47827 is critical, with known exploits available. Organizations should prioritize patching immediately to address this vulnerability and prevent potential unauthorized access.
The urgency for defenders is high, given the nature of the vulnerability. Organizations running affected versions of Windows and IGEL OS must take immediate action to mitigate risks associated with this vulnerability.
The following products are affected: IGEL OS, Windows 10 (all versions from 1507 to 22H2), Windows 11 (all versions), and Windows Server (2012 to 2025).
Organizations should assess their deployment and ensure they are running patched versions to avoid exploitation of this vulnerability.
The CVE ID for this vulnerability is CVE-2025-47827, and it was published on June 5, 2025.
Vulnerability Details
In IGEL OS before version 11, the igel-flash-driver module fails to verify the cryptographic signature of a root filesystem correctly. This flaw allows attackers to bypass Secure Boot, leading to the potential mounting of a crafted root filesystem from an unverified SquashFS image.
The vulnerability is classified under CWE-347, indicating improper verification of a cryptographic signature. Organizations should be aware that this vulnerability can lead to significant impacts on system integrity.
Technical Analysis
The root cause of this vulnerability lies in the igel-flash-driver module's failure to verify cryptographic signatures correctly. The attack vector is physical, meaning that an attacker must have physical access to the system to exploit the vulnerability.
The attack complexity is low, as no special privileges are required to exploit this vulnerability. Additionally, user interaction is not necessary for the exploitation, making it easier for attackers to execute their malicious intent.
The impact on availability is high, as a successful attack could render the system inoperable. However, there are no impacts on confidentiality or integrity.
Risk & Impact Analysis
Real-world deployment of this vulnerability poses a significant risk to organizations utilizing affected versions of IGEL OS and Microsoft Windows. The potential for an attacker to bypass Secure Boot increases the blast radius of this vulnerability, allowing unauthorized access to critical systems.
Organizations should assess their exposure to this vulnerability and prioritize remediation efforts. The urgency of addressing this issue is high due to its exploitation status. Organizations must apply patches or mitigations as soon as possible.
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | Yes |
Ransomware Use | No |
Affected Versions
The following versions are affected by CVE-2025-47827: IGEL OS (all versions prior to 11), Windows 10 (1507, 1607, 1809, 21H2, 22H2), Windows 11 (22H2, 23H2, 24H2, 25H2), and Windows Server (2012, 2016, 2019, 2022, 2025).
Mitigation & Remediation
Organizations should apply the latest patches provided by the vendors to remediate this vulnerability. For IGEL OS, upgrading to version 11 or later is necessary. For Microsoft Windows, ensure that systems are updated with the latest security patches.
If immediate patching is not possible, organizations should implement workarounds as advised by the vendor and restrict physical access to systems where these vulnerabilities are present.
Continuous penetration testing can also help identify any potential weaknesses in the environment.
Detection Guidance
Organizations should monitor logs for any indicators of unauthorized access or attempts to exploit this vulnerability. Behavioral anomalies related to system boot processes should be scrutinized closely.
Additionally, monitoring for any changes in system configurations or unauthorized installations of root filesystems is critical to maintaining security.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2025-47827 highlights the importance of robust cryptographic verification mechanisms in operating systems. This vulnerability represents a pattern of weaknesses that can lead to critical security breaches if not addressed.
Security teams should take this as a lesson to enhance their verification processes and ensure that all cryptographic signatures are validated appropriately.
Organizations can benefit from reviewing their security posture against emerging threats, including vulnerabilities like this one. For further reading on security best practices, consider exploring our resources on penetration testing methodology. Additionally, keeping up with trends in vulnerability management can enhance overall security.
vulnerability management programs are essential for proactive security measures.
API security testing strategies should also be considered as part of a comprehensive security framework.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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