Medium · 6.8 CVE-2023-42135 EUVD-2023-46594GHSA-vgrm-64g7-v874

PAX A920Pro/A50 devices with PayDroid_8.1.0_Sagittarius_V11.1.50_20230614 or earlier can allow local code execution via parameter injection…

Published Jan 15, 2024 · Updated Jun 17, 2025 · Assigned by CERT-PL

Vendor: PAX Technology Product: A50 Product: A920 Pro

Description

PAX A920Pro/A50 devices with PayDroid_8.1.0_Sagittarius_V11.1.50_20230614 or earlier can allow local code execution via parameter injection by bypassing the input validation when flashing a specific partition.

The attacker must have physical USB access to the device in order to exploit this vulnerability.

Affected products

Vendor	Product	Affected	Fixed
PAX Technology	A920 Pro	≤ 11.1.50_20230614	—
PAX Technology	A50	≤ 11.1.50_20230614	—

References

https://ppn.paxengine.com/release/development vendor-advisory
https://blog.stmcyber.com/pax-pos-cves-2023/ technical-description
https://cert.pl/en/posts/2024/01/CVE-2023-4818/ third-party-advisory
https://cert.pl/posts/2024/01/CVE-2023-4818/ third-party-advisory