What is CVE-2025-2486?

CVE-2025-2486 is a high-severity vulnerability in Tianocore Edk2, classified under Active Debug Code. CVSS score: 8.8/10. Published 2025-11-26.

How severe is CVE-2025-2486?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Tianocore Edk2

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 Shel…

EPSS: 0.001 (1.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

Affected products

Tianocore Edk2 — versions 202402*, 202405
Ubuntu Edk2 — versions 2024.05, 2024.02

Weakness classification (CWE)

CWE-489 — Active Debug Code

References

security@ubuntu.com (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2025-2486?: CVE-2025-2486 is a high-severity vulnerability in Tianocore Edk2, classified under Active Debug Code. CVSS score: 8.8/10. Published 2025-11-26.
How severe is CVE-2025-2486?: High severity. CVSS v3 base score is 8.8 out of 10.