Synway SMG Gateway Management Software 2025-07-11 RADIUS Configuration Endpoint /en/9-2radius.php os command injection

Summaryinfo

A vulnerability, which was classified as critical, was found in Synway SMG Gateway Management Software 2025-07-11. The impacted element is an unknown function of the file /en/9-2radius.php of the component RADIUS Configuration Endpoint. Executing a manipulation of the argument radius_address/radius_address2/shared_secret2/source_ip/timeout/retry can lead to os command injection. The identification of this vulnerability is CVE-2025-71284. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability classified as very critical was found in Synway SMG Gateway Management Software 2025-07-11. This vulnerability affects some unknown functionality of the file /en/9-2radius.php of the component RADIUS Configuration Endpoint. The manipulation of the argument radius_address/radius_address2/shared_secret2/source_ip/timeout/retry with an unknown input leads to a os command injection vulnerability. The CWE definition for the vulnerability is CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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).

The advisory is available at github.com. This vulnerability was named CVE-2025-71284 since 04/29/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 04/30/2026). This vulnerability is assigned to T1202 by the MITRE ATT&CK project.

By approaching the search of inurl:en/9-2radius.php it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• Synway

Name

• SMG Gateway Management Software

Version

• 2025-07-11

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