Critical 9.8Published Apr 30, 2026

CVE-2025-71284Synway SMG Gateway Management Software OS Command Injection via radius_address

Updated under an hour ago (Oct 27, 2026, 8:50 AM ET)

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It affects Synway Information Engineering Co., Ltd. Synway SMG Gateway Management Software and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Synway Information Engineering Co., Ltd. Synway SMG Gateway Management Software

Exploited in the last 30 days

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: 9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-78
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Analyzed
Record last updated: Apr 30, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Synway Information Engineering Co., Ltd. Synway SMG Gateway Management Software synway_information_engineering:synway_smg_gateway_management_software (from the name)	0	CNA record
synway smg_gateway_management_software synway:smg_gateway_management_software	all versions	NVD

References

References

https://github.com/projectdiscovery/nuclei-templates/blob/main/http/vulnerabilities/synway/synwaysmg-radius-rce.yaml	third-party-advisory
https://mrxn.net/jswz/synway-9-2radius-rce.html	technical-description, exploit, third-party-advisory
https://mp.weixin.qq.com/s/PyepoFSuQ63E3RnpQa9nsA	technical-description, exploit, third-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

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.