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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…
Medium6.7EPSS 0.26%
- Published
- Updated
- Reserved
- Assigned by
- canonical
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| canonicalCNA (assigner) | 3.1 | Medium6.7 | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Analyzed | 3.1 | Medium6.7 | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.26% · top 83% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: poc · Automatable: no · Technical impact: total
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.7.
Weakness
Affected products
Canonical Ltd. · Ubuntu EDK II
- affected < 2023.05-2ubuntu0.1
References (5)
- https://bugs.launchpad.net/ubuntu/+source/edk2/+bug/2040137 (opens in a new tab)issue-trackingx_transferred
- https://nvd.nist.gov/vuln/detail/CVE-2023-48733 (opens in a new tab)issue-trackingx_transferred
- https://www.openwall.com/lists/oss-security/2024/02/14/4 (opens in a new tab)mailing-listx_transferred
- https://bugs.launchpad.net/ubuntu/+source/lxd/+bug/2040139 (opens in a new tab)issue-trackingx_transferred
- https://lists.debian.org/debian-lts-announce/2024/06/msg00028.html (opens in a new tab)x_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2023-48733)Record last updated .