CVE-2023-48733

MEDIUM
Published Feb 14, 2024 Modified Aug 26, 2025 CWE-1188

Description

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

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CVSS v3.1 Score

6.7
MEDIUM
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-1188 CWE-1188

Affected Products

Vendor Product
canonical lxd
canonical lxd
canonical lxd
tianocore edk2
debian debian_linux

References

Frequently Asked Questions

What is CVE-2023-48733? +
An insecure default to allow UEFI Shell in EDK2 was left enabled in Ubuntu's EDK2. This allows an OS-resident attacker to bypass Secure Boot. It has a CVSS v3.1 base score of 6.7 (MEDIUM).
How severe is CVE-2023-48733? +
CVE-2023-48733 has a CVSS v3.1 score of 6.7 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.
What products are affected by CVE-2023-48733? +
CVE-2023-48733 affects products from canonical, debian, tianocore, specifically: debian_linux, edk2, lxd. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2023-48733? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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