Vulnerability · Published Nov 26, 2025 · Assigned by canonical
CVE-2025-2486UEFI Shell accessible in AAVMF with Secure Boot enabled on Ubuntu
Low 3.7
In plain English
A low-severity security flaw in edk2 from Ubuntu. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 3% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | edk2 | 2022.11-6+deb12u1 | DEBIAN-CVE-2025-2486 |
| Debian:13 | edk2 | 2023.11-7 | DEBIAN-CVE-2025-2486 |
| Debian:14 | edk2 | 2023.11-7 | DEBIAN-CVE-2025-2486 |
| Ubuntu:24.04:LTS | edk2 | 2024.02-2ubuntu0.3 | UBUNTU-CVE-2025-2486 |
Affected products (as reported)
Weakness: CWE-489 · 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