CVE-2025-2486 — UEFI Shell accessible in AAVMF with Secure Boot enabled on Ubuntu

CVE-2025-2486

UEFI Shell accessible in AAVMF with Secure Boot enabled on Ubuntu PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
Ubuntu / edk2	affected 2024.05 before 2024.05-2ubuntu0.3; affected 2024.02 before 2024.02-2ubuntu0.3

CWE

CWE-489

References

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

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.