Vulnerability in Pax Technology A920
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 signed by PAX can be used. The attacker must have physical USB access to the device in order to exploit this vulnerability.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.6 (High). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.007 (49.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 49.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- Pax Technology A920 — versions 0
- Paxtechnology A920
- Paxtechnology Paydroid — versions 7.1.2_aquarius_11.1.50_20230614
Weakness classification (CWE)
Public proof-of-concept exploits
References
- ppn.paxengine.com/release/development (Permissions Required, vendor-advisory)
- blog.stmcyber.com/pax-pos-cves-2023/ (Exploit, technical-description, Third Party Advisory)
- cert.pl/en/posts/2024/01/CVE-2023-4818/ (Third Party Advisory, third-party-advisory)
- cert.pl/posts/2024/01/CVE-2023-4818/ (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2023-4818?
- CVE-2023-4818 is a high-severity vulnerability in Pax Technology A920, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 7.6/10. Published 2024-01-15.
- How severe is CVE-2023-4818?
- High severity. CVSS v3 base score is 7.6 out of 10.
- Is CVE-2023-4818 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.