6.7

CVE-2023-48733: canonical ltd. ubuntu edk ii

CVSS: 6.7v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2023-48733DEBIAN-CVE-2023-48733DLA-3852-1
Published 14-02-2024Last modified 08-05-2025
Open JSON

Vulnerability summary

CVE-2023-48733 is a medium (CVSS 6.7) vulnerability in canonical ltd. ubuntu edk ii. EPSS estimates a 0.26% chance of exploitation in the next 30 days, higher than 16.2% of scored vulnerabilities.

Overall risk
27/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.7/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.26%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
USN-6638-1

Timeline

  1. 14-02-2024
    PublishedVulnerability first disclosed.
  2. 08-05-2025
    Last modifiedVulnerability information updated.

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 metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.26%

Chance of exploitation in the next 30 days

Percentile

16%

Versus all other CVEs

30-day change

0.00 pp

From 0.26% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.26%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian2 products
  • edk2< 2020.11-2+deb11u2 | < 0~20181115.85588389-3+deb10u4 | < 2022.11-6+deb12u1 | < 2023.11-7
  • debian_linuxEOL10.0
Canonical1 product
  • lxd5.0:candidate | 5.21:candidate | 5.21:edge
Canonical ltd.1 product
Opensuse1 product
  • ovmf&distro=openSUSE Tumbleweed< 202308-7.1
Tianocore1 product
Ubuntu1 product
  • edk2All versions (No fix recorded) | < 0~20191122.bd85bf54-2ubuntu3.5 | < 2022.02-3ubuntu0.22.04.2

6 vendors · 7 products

References

10 links