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CVE-2023-48733

Published: Feb 14, 2024Updated: Aug 26, 2025 Sources: CVE List NVD BDUCWE-1188
NVD MITRE
6.7CVSSMEDIUM
EPSS Score
0.3%
Top 83.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:LAC:LPR:HUI:NS:UC:HI:HA:H
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:HPrivileges Required
High
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-1188

Affected Products

lxdcanonical
On-prem
Operating Systems / linux-distro
edk2tianocore
EmbeddedFirmware
Hardware Firmware / bios-uefi
debian linuxdebian
On-premOS
Operating Systems / linux-distro
Debian GNU/LinuxСообщество свободного программного обеспечения
On-premOS
Operating Systems / linux-distro
Astra Linux Special EditionООО «РусБИТех-Астра»
On-premOS
Operating Systems / linux-distro
canonicalcommercialGBOperating Systemsaka canonical ltd.
tianocoreoss-projectHardware Firmwareaka edk2, edk ii
debianoss-projectGBOperating Systemsaka debian gnu/linux
сообщество свободного программного обеспеченияoss-projectOperating Systemsaka сообщество свободного программного обеспечения, fsf
ооо «русбитех-астра»commercialRUOperating Systemsaka rusbitech-astra
and 3 more affected products View all →

Exploitability

Official Patch Available

References

https://bugs.launchpad.net/ubuntu/+source/edk2/+bug/2040137
bugs.launchpad.net
https://bugs.launchpad.net/ubuntu/+source/lxd/+bug/2040139
bugs.launchpad.net
https://lists.debian.org/debian-lts-announce/2024/06/msg00028.html
lists.debian.org
and 9 more references View all →

Timeline

Published
Feb 14, 2024
Last Updated
Aug 26, 2025

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