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CVE-2023-42135

21
FAUCET Score

CVE-2023-42135 affects PAX A920Pro and A50 payment terminals running PayDroid_8.1.0_Sagittarius_V11.1.50 or earlier. This vulnerability allows for local code execution through parameter injection, bypassing input validation during the flashing of a specific partition. Exploitation requires physical USB access to the device, but if successful, it can lead to high impact on confidentiality, integrity, and availability. There is no known active exploitation, public exploit code, or significant community discussion, though it has received some media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 8.1.0_sagittarius_11.1.50_20230614CPE matchmatch criteria
cpe:2.3:o:paxtechnology:paydroid:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.8MEDIUM

CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
PHYSICAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
0.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.59%
Probability of exploitation in next 30 days
EPSS Percentile
44.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0059 is in the 84th percentile among its peer group of 1,532 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.2 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

blog.stmcyber.com / pax-pos-cves-2023
ExploitThird Party Advisory
cert.pl / en/posts/2024/01/CVE-2023-4818
Third Party Advisory
cert.pl / posts/2024/01/CVE-2023-4818
Third Party Advisory
ppn.paxengine.com / release/development
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