Vulnerability Report

CVE-2023-49721

Title: Canonical Lxd

Other

Proof Of Concept

No public PoC currently indexed for CVE-2023-49721.

CWE Category CWE-276

Published Date Feb 14, 2024

Modified Date Aug 26, 2025

Exploit Status Not Found

Score 6.7 CVSS v3.1

Exploit Probability (EPSS)

0.24%

Vulnerability Summary

CVE-2023-49721: An insecure default to allow UEFI Shell in EDK2 was left enabled in LXD. This allows an OS-resident attacker to bypass Secure Boot.

Impacted Vendors

canonical 1

linuxcontainers 1

tianocore 1

Reference Links

https://bugs.launchpad.net/ubuntu/+source/edk2/+bug/2040137 https://bugs.launchpad.net/ubuntu/+source/lxd/+bug/2040139 https://nvd.nist.gov/vuln/detail/CVE-2023-48733 https://www.openwall.com/lists/oss-security/2024/02/14/4 https://bugs.launchpad.net/ubuntu/+source/edk2/+bug/2040137 https://bugs.launchpad.net/ubuntu/+source/lxd/+bug/2040139 https://nvd.nist.gov/vuln/detail/CVE-2023-48733 https://www.openwall.com/lists/oss-security/2024/02/14/4

CVSS v3.1

Source Entity [email protected]

Severity MEDIUM

6.7

Attack Vector

LOCAL

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

RAW VECTOR CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2023-49721 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

August 26, 2025 MODIFIED

Vulnerability data or affected products updated.

February 14, 2024 PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector LOCAL

Complexity LOW

Privileges N/A

Interaction NONE

CVSS Vector String


                                    CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected Stack

No specific products linked.