# CVE-2023-42134: Code injection in POS terminals

> Attackers with physical USB access can overwrite signed partitions on PAX POS devices to execute arbitrary code locally.

- **Severity:** Medium 6.8 (`CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 15 Jan 2024
- **Updated:** 17 Jun 2025
- **Also known as:** GHSA-f88h-fg97-9qq5

## What is CVE-2023-42134?

CVE-2023-42134 is a medium-severity code injection vulnerability in PAX Technology POS terminals, published on 15 Jan 2024. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

PAX Android based POS devices with PayDroid_8.1.0_Sagittarius_V11.1.45_20230314 or earlier can allow the signed partition overwrite and subsequently local code execution via hidden command.

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

Weakness: CWE-912 (Hidden Functionality)

## Which versions are affected by CVE-2023-42134?

It affects 1 product.


Products: Paxtechnology Paydroid.

## How do I fix CVE-2023-42134?

No fix has been published for CVE-2023-42134 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-42134 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-42134 exists.

## Other vulnerabilities in PAX Technology POS terminals

- [CVE-2023-42136](https://insights.sbomify.com/CVE-2023-42136/): Command injection in POS terminals (high 7.8)
- [CVE-2023-42137](https://insights.sbomify.com/CVE-2023-42137/): Path traversal in POS terminals (high 7.8)
- [CVE-2022-26582](https://insights.sbomify.com/CVE-2022-26582/): Command injection in n/a (high 7.8)
- [CVE-2023-4818](https://insights.sbomify.com/CVE-2023-4818/): Security feature bypass in A920 (high 7.6)
- [CVE-2023-42135](https://insights.sbomify.com/CVE-2023-42135/): Command injection in A50 (medium 6.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-42134 and fix it if it is affected.

What it is: CVE-2023-42134 is a medium-severity code injection vulnerability in PAX Technology POS terminals, published on 15 Jan 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-42134 exists.

Affected product: PAX Technology POS terminals. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2023-42134/ (Markdown: https://insights.sbomify.com/CVE-2023-42134/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-42134
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-42134
- OSV: https://osv.dev/vulnerability/CVE-2023-42134

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-42134/
Summaries are generated and may contain mistakes; the official description above is the record.