CVE-2023-49721

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

14/02/2024

Last modified:

26/08/2025

Description

An insecure default to allow UEFI Shell in EDK2 was left enabled in LXD. This allows an OS-resident attacker to bypass Secure Boot.

Impact

Vector 3.x

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 6.70 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): High
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x

6.70

Severity 3.x

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:canonical:lxd::::::::	5.0.0 (including)	5.21.0 (excluding)
cpe:2.3:a:tianocore:edk2::-::::::*		2023.11-8 (including)

To consult the complete list of CPE names with products and versions, see this page

CVE-2023-49721

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools