What is the CVSS score of CVE-2025-51390?

CVE-2025-51390 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 2.3%.

Which versions of N600r Firmware are affected by CVE-2025-51390?

Organizations using TOTOLINK N600R V4.3.0cu.7647_B20210106 face critical risk from CVE-2025-51390, a OS command injection vulnerability rated CVSS 9.8.

Is there a public PoC exploit available for CVE-2025-51390?

Yes, a public proof-of-concept exploit is available for CVE-2025-51390. Prioritise patching immediately. EPSS: 2.3%.

How to fix or mitigate CVE-2025-51390?

Within 24 hours: Identify all affected systems and apply vendor patches immediately. Validate that input sanitization is in place for all user-controlled parameters.

N600r Firmware CVE-2025-51390

CRITICAL

OS Command Injection (CWE-78)

2025-08-04 cve@mitre.org

Command Injection N600r Firmware

9.8

CVSS 3.1 · Vendor: mitre

Severity by source

Vendor (mitre) PRIMARY

9.8 CRITICAL

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

Primary rating from Vendor (mitre) · only source for this CVE.

CVSS VectorVendor: mitre

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 19:05 vuln.today

PoC Detected

Aug 15, 2025 - 16:07 vuln.today

Public exploit code

CVE Published

Aug 04, 2025 - 18:15 nvd

CRITICAL 9.8

DescriptionCVE.org

TOTOLINK N600R V4.3.0cu.7647_B20210106 was discovered to contain a command injection vulnerability via the pin parameter in the setWiFiWpsConfig function.

AnalysisAI

TOTOLINK N600R V4.3.0cu.7647_B20210106 was discovered to contain a command injection vulnerability via the pin parameter in the setWiFiWpsConfig function. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as OS Command Injection (CWE-78), which allows attackers to execute arbitrary operating system commands on the host. TOTOLINK N600R V4.3.0cu.7647_B20210106 was discovered to contain a command injection vulnerability via the pin parameter in the setWiFiWpsConfig function. Affected products include: Totolink N600R Firmware.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Avoid passing user input to shell commands. Use language-specific APIs instead of shell execution. Apply strict input validation with allowlists.