CVE-2025-2486— UEFI Shell accessible in AAVMF with Secure Boot enabled on Ubuntu
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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: NVD (National Vulnerability Database)
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: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
遗留的调试代码
Source: NVD (National Vulnerability Database)
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
II. Public POCs for CVE-2025-2486
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IV. Related Vulnerabilities
Same product: edk2
- CVE-2025-2296
Un-verified kernel bypass Secure Boot mechanism in direct bo - CVE-2024-38798
Uncleared password keystrokes in circular queue can lead to - CVE-2024-38805
iSCSI Remote Memory Corruption and Denial of Service - CVE-2025-3770
SMM IDT Privilege Escalation Vulnerability - CVE-2024-38797
Out-of-bounds Read in HashPeImageByType()
Same weakness: CWE-489
V. Comments for CVE-2025-2486
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