CVE-2025-71284

Published Apr 30, 2026

Last updated 2 months ago

Overview

AI description

Automated description summarized from trusted sources.

CVE-2025-71284 describes an OS command injection vulnerability found within the Synway SMG Gateway Management Software. Specifically, the flaw resides in the RADIUS configuration endpoint, located at `/en/9-2radius.php`. The vulnerability occurs because the `radius_address` POST parameter, along with other related parameters such as `radius_address2`, `shared_secret2`, `source_ip`, `timeout`, and `retry`, are split and directly interpolated into a `sed` command without proper sanitization. This allows an unauthenticated remote attacker to inject arbitrary shell commands by sending a crafted POST request with these parameters, along with `save=1` and `enable_radius=1`, ultimately leading to remote code execution. Evidence of exploitation was first observed by the Shadowserver Foundation on July 11, 2025.

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).
Source: disclosure@vulncheck.com
NVD status: Analyzed
Products: smg_gateway_management_software

Risk scores

CVSS 4.0

Type: Secondary
Base score: 9.3
Impact score: -
Exploitability score: -
Vector string: 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Severity: CRITICAL

CVSS 3.1

Type: Primary
Base score: 9.8
Impact score: 5.9
Exploitability score: 3.9
Vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity: CRITICAL

Weaknesses

disclosure@vulncheck.com: CWE-78

Hype score: Not currently trending

Configurations

[
  {
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:synway:smg_gateway_management_software:-:*:*:*:*:*:*:*",
            "matchCriteriaId": "55304276-DAF7-4BD2-97D2-CA3B604A6318",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ]
  }
]

References

Sources include official advisories and independent security research.