Vulnerability Monitor

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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.

Published

2024-02-14T22:15:47.530

Last Modified

2025-08-26T17:19:29.193

Status

Analyzed

Source

[email protected]

Severity

CVSSv3.1: 6.7 (MEDIUM)

Weaknesses

Type: Secondary
CWE-276

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	canonical	lxd	< 5.21.0	Yes
Application	tianocore	edk2	≤ 2023.11-8	Yes

References

https://bugs.launchpad.net/ubuntu/+source/edk2/+bug/2040137 Issue Tracking ([email protected])
https://bugs.launchpad.net/ubuntu/+source/lxd/+bug/2040139 Issue Tracking ([email protected])
https://nvd.nist.gov/vuln/detail/CVE-2023-48733 Third Party Advisory ([email protected])
https://www.openwall.com/lists/oss-security/2024/02/14/4 Mailing List ([email protected])
https://bugs.launchpad.net/ubuntu/+source/edk2/+bug/2040137 Issue Tracking (af854a3a-2127-422b-91ae-364da2661108)
https://bugs.launchpad.net/ubuntu/+source/lxd/+bug/2040139 Issue Tracking (af854a3a-2127-422b-91ae-364da2661108)
https://nvd.nist.gov/vuln/detail/CVE-2023-48733 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.openwall.com/lists/oss-security/2024/02/14/4 Mailing List (af854a3a-2127-422b-91ae-364da2661108)