CVE-2025-2486 — HIGH (8.8) — White Hats Nepal

Vulnerability Description

The Ubuntu edk2 UEFI firmware packages accidentally allowed the UEFI Shell to be accessed in Secure Boot environments, possibly allowing bypass of Secure Boot constraints. Versions 2024.05-2ubuntu0.3 and 2024.02-2ubuntu0.3 disable the Shell. Some previous versions inserted a secure-boot-based decision to continue running inside the Shell itself, which is believed to be sufficient to enforce Secure Boot restrictions. This is an additional repair on top of the incomplete fix for CVE-2023-48733.

CVSS Score

8.8

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Tianocore	Edk2	202402*

Related Weaknesses (CWE)

CWE-489

References

https://bugs.launchpad.net/ubuntu/+source/edk2/+bug/2101797Third Party AdvisoryPatch

FAQ

What is CVE-2025-2486?

CVE-2025-2486 is a vulnerability with a CVSS score of 8.8 (HIGH). The Ubuntu edk2 UEFI firmware packages accidentally allowed the UEFI Shell to be accessed in Secure Boot environments, possibly allowing bypass of Secure Boot constraints. Versions 2024.05-2ubuntu0.3 ...

How severe is CVE-2025-2486?

CVE-2025-2486 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2025-2486?

Check the references section above for vendor advisories and patch information. Affected products include: Tianocore Edk2.