CVE-2025-51390Public exploitNetwork attack vector

Unauthenticated command execution via crafted WPS PIN

Published Aug 4, 2025 · Updated Jul 5, 2026

OS command injection in TOTOLINK N600R 4.3.0cu.7647_B20210106 allows remote attackers to execute arbitrary commands via a crafted WPS PIN. The setWiFiWpsConfig handler incorporates the pin value into a shell command without neutralizing command delimiters. The cstecgi.cgi endpoint accepts the request without authentication, and successful injection executes commands in the router firmware context.

CVSS severity9.8
Critical
EPSS probability1.81%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in TOTOLINK N600R 4.3.0cu.7647_B20210106 allows remote attackers to execute arbitrary commands via a crafted WPS PIN. The setWiFiWpsConfig handler incorporates the pin value into a shell command without neutralizing command delimiters. The cstecgi.cgi endpoint accepts the request without authentication, and successful injection executes commands in the router firmware context.

The record

CVE
CVE-2025-51390
Published
Aug 4, 2025
Updated
Jul 5, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-78, CAPEC-88, T1059.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 4, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 5, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8CISA ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CAPEC-88OS Command Injection
T1059.004Command and Scripting Interpreter: Unix Shell

Public exploit references

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

Technologies

Your stack

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Your stack

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