# CVE-2025-64385: INCORRECT SECURITY VALIDATION IN SENDING UDP FRAMES

> Unauthenticated attackers can modify device configuration via UDP using the MAC address, bypassing security controls on Circutor TCPRS1plus devices.

- **Severity:** Critical 9.2 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:L/SA:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 31 Oct 2025
- **Updated:** 3 Nov 2025
- **Also known as:** GHSA-x2wp-8726-qw87

## What is CVE-2025-64385?

CVE-2025-64385 is a critical missing authorization vulnerability in Circutor TCPRS1plus, published on 31 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The equipment initially can be configured using the manufacturer's application, by Wi-Fi, by the web server or with the manufacturer’s software.
Using the manufacturer's software, the device can be configured via UDP. Analyzing this communication, it has been observed that any aspect of the initial configuration can be changed by means of the device's MAC without the need for authentication.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2025-64385?


## How do I fix CVE-2025-64385?

No fix has been published for CVE-2025-64385 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-64385 being exploited?

There is no known exploitation of CVE-2025-64385 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-64385 and fix it if it is affected.

What it is: CVE-2025-64385 is a critical missing authorization vulnerability in Circutor TCPRS1plus, published on 31 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-64385 in the wild and no public exploit code.

Affected product: Circutor TCPRS1plus. 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-2025-64385/ (Markdown: https://insights.sbomify.com/CVE-2025-64385/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-64385
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-64385
- OSV: https://osv.dev/vulnerability/CVE-2025-64385

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-64385/
Summaries are generated and may contain mistakes; the official description above is the record.