Is CVE-2025-2486 actively exploited?

No active exploitation of CVE-2025-2486 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2025-2486 be exploited remotely?

No. CVE-2025-2486 requires local access to exploit.

What is the CVSS score of CVE-2025-2486?

CVE-2025-2486 has a CVSS score of 8.8 (HIGH).

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HIGH

CVE-2025-2486

CWE-489Published: November 26, 2025· Updated: Jun 17, 2026

8.8

CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2025-2486 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.