What’s Vulnerable › Vulnerabilities

CVE-2023-4818

• Severity: high (CVSS 7.6 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2024-01-15 · updated 2026-06-17
• Weakness: CWE-74

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.

Affected products

• Paxtechnology Paydroid: 7.1.2_aquarius_11.1.50_20230614

References

• https://blog.stmcyber.com/pax-pos-cves-2023/
• https://cert.pl/en/posts/2024/01/CVE-2023-4818/
• https://cert.pl/posts/2024/01/CVE-2023-4818/
• https://ppn.paxengine.com/release/development
• https://blog.stmcyber.com/pax-pos-cves-2023/
• https://cert.pl/en/posts/2024/01/CVE-2023-4818/
• https://cert.pl/posts/2024/01/CVE-2023-4818/
• https://ppn.paxengine.com/release/development

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