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

Quick assessment

Affected
Ubuntu edk2
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Ubuntu EDK2是Ubuntu开源的一个固件开发工具包。 Ubuntu edk2存在安全漏洞，该漏洞源于Secure Boot环境中允许访问UEFI Shell，可能导致Secure Boot约束被绕过。

AI Predicted 7.5 Difficulty: Easy EPSS 0.13% · P2
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I. Basic Information for CVE-2025-2486

Vulnerability Information
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Vulnerability Title
UEFI Shell accessible in AAVMF with Secure Boot enabled on Ubuntu
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
遗留的调试代码
Source: CVE Program / CVE List V5
Vulnerability Title
Ubuntu EDK2 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Ubuntu EDK2是Ubuntu开源的一个固件开发工具包。 Ubuntu edk2存在安全漏洞，该漏洞源于Secure Boot环境中允许访问UEFI Shell，可能导致Secure Boot约束被绕过。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Ubuntu edk2 2024.05 ~ 2024.05-2ubuntu0.3 -

II. Public POCs for CVE-2025-2486

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III. Intelligence Information for CVE-2025-2486

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IV. Related Vulnerabilities

Same product: edk2
Same vendor: Ubuntu
Same weakness: CWE-489

V. Comments for CVE-2025-2486

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