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).

CVSS 4.0

9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS 3.1

9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

5.7% chance of exploitation in the next 30 days; higher than 92% of CVEs (scores of 2026-10-25)

CWE

CWE-78

Published

2026-04-30

Modified

2026-10-07

Record from

the NVD, synced 2026-10-19

Affected

• synway:smg_gateway_management_software

References

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

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