CVE-2025-71284

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).

• CWE-78

• https://github.com/projectdiscovery/nuclei-templates/blob/main/http/vulnerabilities/synway/synwaysmg-radius-rce.yamlThird Party Advisory
• https://mp.weixin.qq.com/s/PyepoFSuQ63E3RnpQa9nsAExploit, Third Party Advisory
• https://mrxn.net/jswz/synway-9-2radius-rce.htmlExploit, Third Party Advisory
• https://www.synway.net/Product
• https://www.vulncheck.com/advisories/synway-smg-gateway-management-software-os-command-injection-via-radius-addressThird Party Advisory

Published

Apr 30, 2026

Last Modified

Jun 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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