CVE-2025-71284Known exploitationPublic exploitNetwork attack vector

Unauthenticated command execution via RADIUS parameters

Published Apr 30, 2026 · Updated Apr 30, 2026

OS command injection in Synway SMG Gateway Management Software version 0 allows remote attackers to execute arbitrary commands. The /en/9-2radius.php endpoint splits radius_address and interpolates it directly into a sed command without neutralizing shell metacharacters. A POST request that sets save=1 and enable_radius=1 and supplies crafted RADIUS fields reaches the flaw without authentication, granting command execution on the gateway.

CVSS severity9.3
Critical
EPSS probability5.73%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in Synway SMG Gateway Management Software version 0 allows remote attackers to execute arbitrary commands. The /en/9-2radius.php endpoint splits radius_address and interpolates it directly into a sed command without neutralizing shell metacharacters. A POST request that sets save=1 and enable_radius=1 and supplies crafted RADIUS fields reaches the flaw without authentication, granting command execution on the gateway.

The record

CVE
CVE-2025-71284
Published
Apr 30, 2026
Updated
Apr 30, 2026
Vendor
Synway Information Engineering Co., Ltd.
Product
Synway SMG Gateway Management Software
Classifications
CWE-78, T1190, T1059.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 11, 2025Exploitation reportedShadowserver-observed exploitation activity
  2. Apr 30, 2026CVE publishedPublication date reported by the CVE source.
  3. Apr 30, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Synway Information Engineering Co., Ltd. · Synway SMG Gateway Management Softwareversion=0

Published CVSS scores

9.8VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3VulnCheckCVSS: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 describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationReported
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1190Exploit Public-Facing Application
T1059.004Unix Shell

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Reported exploitation

Technologies

Your stack

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Your stack

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