CVE-2025-71284 | Synway SMG Gateway Management Software contains an OS comman… | CVSS 9.8 CRITICAL

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).

Metadata

CVE ID: CVE-2025-71284
State: PUBLISHED
Assigner: VulnCheck
Reserved: 2026-04-29 15:53 UTC
Published: 2026-04-30 16:08 UTC
Last updated: 2026-04-30 18:06 UTC
Primary CWE: CWE-78
Improper Neutralization of Special Elements used in an OS Co…
Vendor / Product: Synway Information Engineering Co., Ltd. / Synway SMG Gateway Management Software
Sources: cve.org · NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.1

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

SSVC — CISA Coordinator

Exploitation: PoC
Automatable: yes
Tech. Impact: total

Affected products (1)

Vendor	Product	Platform	Versions
Synway Information Engineering Co., Ltd.	Synway SMG Gateway Management Software	—	—

Weakness (CWE)

CWE	Source	Description
CWE-78	cna	Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') (CWE-78)

CVSS scores (2)

Score	Severity	Version	Source	Vector
9.8	CRITICAL	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3	CRITICAL	4.0	cna	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

References (5)