# CVE-2025-71284: Synway SMG Gateway Management Software OS Command Injection via radius_address

> Unauthenticated attackers can execute arbitrary shell commands on Synway SMG Gateways via the radius_address parameter in the RADIUS configuration endpoint.

- **Severity:** Critical 9.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/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:** 30 Apr 2026
- **Updated:** 30 Apr 2026
- **Also known as:** GHSA-8mvw-jrmp-qqqj

## What is CVE-2025-71284?

CVE-2025-71284 is a critical command injection vulnerability in Synway SMG Gateway Management Software, published on 30 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Synway SMG Gateway Management Software contains an OS command injection vulnerability in the RADIUS configuration endpoint at /en/9-2radius.php where the radius_address POST parameter is split and interpolated directly into a sed command without sanitization. An unauthenticated remote attacker can inject arbitrary shell commands by submitting a POST request with crafted radius_address, radius_address2, shared_secret2, source_ip, timeout, or retry parameters along with save=1 and enable_radius=1 to achieve remote code execution. Exploitation evidence was first observed by the Shadowserver Foundation on 2025-07-11 (UTC).

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command)

## Which versions are affected by CVE-2025-71284?

It affects 1 product.


Products: Synway Smg Gateway Management Software.

## How do I fix CVE-2025-71284?

No fix has been published for CVE-2025-71284 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-71284 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-71284 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-71284 and fix it if it is affected.

What it is: CVE-2025-71284 is a critical command injection vulnerability in Synway SMG Gateway Management Software, published on 30 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-71284 exists.

Affected product: Synway SMG Gateway Management Software. 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-2025-71284/ (Markdown: https://insights.sbomify.com/CVE-2025-71284/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-71284
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-71284
- OSV: https://osv.dev/vulnerability/CVE-2025-71284

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-71284/
Summaries are generated and may contain mistakes; the official description above is the record.