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CVE-2025-2486 Detail

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.


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

Nist CVSS score does not match with CNA score
CNA:  Canonical Ltd.
CVSS-BT 3.7 LOW
Vector:  CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:H/SI:H/SA:H/E:U

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://bugs.launchpad.net/ubuntu/+source/edk2/+bug/2101797 Canonical Ltd.

Weakness Enumeration

CWE-ID CWE Name Source
CWE-489 Active Debug Code Canonical Ltd.  

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2025-2486
NVD Published Date:
11/26/2025
NVD Last Modified:
11/26/2025
Source:
Canonical Ltd.