# CVE-2025-47827

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.

- Page: https://www.vulneraibility.com/cve/CVE-2025-47827
- CVSS: 4.6
- Known exploited: yes, in CISA KEV since 2025-10-14; CISA due date 2025-11-04
- EPSS: 5.15%
- Unvetted proof-of-concept code on GitHub: 1 GitHub proof of concept (first 2025-05-20)
- CISA SSVC: exploitation active, automatable no, technical impact partial (assessed 2025-10-15)
- Weakness: CWE-347
- Published: 2025-06-05

## Affected

- igel:igel_os
- microsoft:windows_10_1507
- microsoft:windows_10_1607
- microsoft:windows_10_1809
- microsoft:windows_10_21h2
- microsoft:windows_10_22h2
- microsoft:windows_11_22h2
- microsoft:windows_11_23h2
- microsoft:windows_11_24h2
- microsoft:windows_11_25h2
- microsoft:windows_server_2012
- microsoft:windows_server_2016
- microsoft:windows_server_2019
- microsoft:windows_server_2022
- microsoft:windows_server_2022_23h2
- microsoft:windows_server_2025

## References

- [other] https://github.com/Zedeldi/igelfs
- [other] https://github.com/Zedeldi/CVE-2025-47827
- [advisory] https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2025-47827
- [other] https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-47827

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Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.