CVE-2025-2486

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 v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.0 / Impact : 6.0

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://bugs.launchpad.net/ubuntu/+source/edk2/+bug/2101797	Patch Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:tianocore:edk2:202402:::::::
	cpe:2.3:a:tianocore:edk2:202405:::::::*

History

17 Jun 2026, 09:07

Type	Values Removed	Values Added
References	~~() https://bugs.launchpad.net/ubuntu/+source/edk2/+bug/2101797 - Third Party Advisory, Patch~~	() https://bugs.launchpad.net/ubuntu/+source/edk2/+bug/2101797 - Patch, Third Party Advisory

19 Dec 2025, 16:31

Type	Values Removed	Values Added
References	~~() https://bugs.launchpad.net/ubuntu/+source/edk2/+bug/2101797 -~~	() https://bugs.launchpad.net/ubuntu/+source/edk2/+bug/2101797 - Third Party Advisory, Patch
CPE		cpe:2.3:a:tianocore:edk2:202405:::::::* cpe:2.3:a:tianocore:edk2:202402:::::::
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 8.8
First Time		Tianocore edk2 Tianocore

26 Nov 2025, 18:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-11-26 18:15

Updated : 2026-06-17 09:07

NVD link : CVE-2025-2486

Mitre link : CVE-2025-2486

CVE.ORG link : CVE-2025-2486

JSON object : View

Products Affected

tianocore

edk2

CWE

CWE-489

Active Debug Code

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