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CVE-2023-4818
PAX A920 device allows to downgrade bootloader due to a bug in its version check. The signature is correctly checked and only bootloader…
High7.6EPSS 0.66%
- Published
- Updated
- Reserved
- Assigned by
- CERT-PL
Description
PAX A920 device allows to downgrade bootloader due to a bug in its version check. The signature is correctly checked and only bootloader signed by PAX can be used. The attacker must have physical USB access to the device in order to exploit this vulnerability.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | High7.6 | CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | High7.6 | CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.66% · top 48% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.6.
Weakness
Affected products
- affected < A920_AP_Boot_Release_V5.14
References (4)
- https://ppn.paxengine.com/release/development (opens in a new tab)vendor-advisoryx_transferred
- https://blog.stmcyber.com/pax-pos-cves-2023/ (opens in a new tab)technical-descriptionx_transferred
- https://cert.pl/en/posts/2024/01/CVE-2023-4818/ (opens in a new tab)third-party-advisoryx_transferred
- https://cert.pl/posts/2024/01/CVE-2023-4818/ (opens in a new tab)third-party-advisoryx_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-2023-4818)Record last updated .