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).
CVE-2025-71284
Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-04-30. NVD baseline CVSS 9.8; sources differ by 0.0.
- High severity, but no confirmed exploitation yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 9.8
- EG Score
- 9.8(medium)
- EPSS
- 92.2%
- KEV
- Not listed
Published
April 30, 2026
Last Modified
May 5, 2026
Advisory Details (5)
Auto-updated May 9, 2026Synway SMG Gateway Management Software OS Command Injection via radius_address | Advisories | VulnCheck
https://www.vulncheck.com/advisories/synway-smg-gateway-management-software-os-command-injection-via-radius-addressSynway UC IP-PBX,VoIP Gateway,Call Recording Card, IP-Phone, Access Point & CPE
https://www.synway.net/Synway SMG网关管理软件 9-2radius.php 命令注入漏洞 - Mrxn's Blog
https://mrxn.net/jswz/synway-9-2radius-rce.htmlnuclei-templates/http/vulnerabilities/synway/synwaysmg-radius-rce.yaml at main · projectdiscovery/nuclei-templates · GitHub
https://github.com/projectdiscovery/nuclei-templates/blob/main/http/vulnerabilities/synway/synwaysmg-radius-rce.yamlWeakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 10× in last 7d / 40× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
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Frequently asked(5)
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