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Vulnerability record · CVE-2025-71284 · published 30 April 2026

CVE-2025-71284: Synway smg gateway management software os command injection vulnerability

SSynway · Smg Gateway Management Software

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).

9.3 CVSS 4.0 Critical EPSS 5.7% · top 7.2% CWE-78 · OS command injection
9.3CVSS 4.0 base score
5.7%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
5References, 2 tagged exploit
17 Jun 2026Last modified by NVD

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).

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/projectdiscovery/nuclei-templates/blob/main/http/vulnerabilities/synway/synwaysmg-radius-rce.yaml Third Party Advisory
https://mp.weixin.qq.com/s/PyepoFSuQ63E3RnpQa9nsA ExploitThird Party Advisory
https://mrxn.net/jswz/synway-9-2radius-rce.html ExploitThird Party Advisory
https://www.synway.net/ Product
https://www.vulncheck.com/advisories/synway-smg-gateway-management-software-os-command-injection-via-radius-address Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2025-71284), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.