# CVE-2019-25237: V-SOL GPON/EPON OLT Platform 2.03 Privilege Escalation via User Role Parameter

> Normal users can gain administrative access by manipulating the user role parameter in HTTP requests, requiring immediate patching by network administrators.

- **Severity:** High 8.7 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 24 Dec 2025
- **Updated:** 24 Dec 2025
- **Also known as:** GHSA-46cm-29f3-f9rv

## What is CVE-2019-25237?

CVE-2019-25237 is a high-severity vulnerability in Guangzhou V-SOLUTION Electronic Technology Co., Ltd. SOL GPON/EPON OLT Platform, published on 24 Dec 2025. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

V-SOL GPON/EPON OLT Platform v2.03 contains a privilege escalation vulnerability that allows normal users to gain administrative access by manipulating the user role parameter. Attackers can send a crafted HTTP POST request to the user management endpoint with 'user_role_mod' set to integer value '1' to elevate their privileges.

Weakness: CWE-863 (Incorrect Authorization)

## Which versions are affected by CVE-2019-25237?


## How do I fix CVE-2019-25237?

No fix has been published for CVE-2019-25237 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-25237 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2019-25237 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-25237 and fix it if it is affected.

What it is: CVE-2019-25237 is a high-severity vulnerability in Guangzhou V-SOLUTION Electronic Technology Co., Ltd. SOL GPON/EPON OLT Platform, published on 24 Dec 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2019-25237 exists.

Affected product: Guangzhou V-SOLUTION Electronic Technology Co., Ltd. SOL GPON/EPON OLT Platform. 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-2019-25237/ (Markdown: https://insights.sbomify.com/CVE-2019-25237/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-25237
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-25237
- OSV: https://osv.dev/vulnerability/CVE-2019-25237

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From sbomify Insights: https://insights.sbomify.com/CVE-2019-25237/
Summaries are generated and may contain mistakes; the official description above is the record.