# CVE-2017-20235: ProSoft Technology ICX35-HWC Authentication Bypass

> Unauthenticated attackers can bypass authentication in the web interface to gain full administrative access to the cellular gateway configuration.

- **Severity:** Critical 9.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 3 Apr 2026
- **Updated:** 25 May 2026
- **Also known as:** GHSA-6826-cff7-fh67

## What is CVE-2017-20235?

CVE-2017-20235 is a critical authentication bypass vulnerability in ProSoft Technology ICX35-HWC Cellular Gateway, published on 3 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

ProSoft Technology ICX35-HWC version 1.3 and prior cellular gateways contain an authentication bypass vulnerability in the web user interface that allows unauthenticated attackers to gain access to administrative functions without valid credentials. Attackers can bypass the authentication mechanism in affected firmware versions to obtain full administrative access to device configuration and settings.

Weakness: CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2017-20235?

It affects 1 product.


Products: Prosoft-Technology Icx35-Hwc Firmware.

## How do I fix CVE-2017-20235?

No fix has been published for CVE-2017-20235 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-20235 being exploited?

There is no known exploitation of CVE-2017-20235 in the wild and no public exploit code.

## Other vulnerabilities in ProSoft Technology ICX35-HWC Cellular Gateway

- [CVE-2017-20236](https://insights.sbomify.com/CVE-2017-20236/): ProSoft Technology ICX35-HWC Command Injection via Web Interface (critical 9.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-20235 and fix it if it is affected.

What it is: CVE-2017-20235 is a critical authentication bypass vulnerability in ProSoft Technology ICX35-HWC Cellular Gateway, published on 3 Apr 2026. 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-2017-20235 in the wild and no public exploit code.

Affected product: ProSoft Technology ICX35-HWC Cellular Gateway. 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-2017-20235/ (Markdown: https://insights.sbomify.com/CVE-2017-20235/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-20235
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-20235
- OSV: https://osv.dev/vulnerability/CVE-2017-20235

---
From sbomify Insights: https://insights.sbomify.com/CVE-2017-20235/
Summaries are generated and may contain mistakes; the official description above is the record.