Which versions of TOTOLINK N300RH are affected by CVE-2025-6401?

CVE-2025-6401 is a low-severity vulnerability in A vulnerability (CVSS 3.5). The limited severity suggests constrained impact, typically requiring specific conditions or local access for…

Is there a public PoC exploit available for CVE-2025-6401?

Yes, a public proof-of-concept exploit is available for CVE-2025-6401. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2025-6401?

During next maintenance window: Apply vendor patches when convenient. Monitor vendor channels for updates.

TOTOLINK N300RH CVE-2025-6401

Q: What is the CVSS score of CVE-2025-6401?

CVE-2025-6401 has a CVSS 4.0 base score of 2.0 (Low). CVSS vector: CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/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. EPSS exploitation probability: 0.1%.

EUVD-2025-18807 LOW

Improper Resource Shutdown or Release (CWE-404)

2025-06-21 cna@vuldb.com

Denial Of Service N300rh Firmware

2.0

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

2.0 LOW

CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/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

vuln.today AI

3.5 LOW

Adjacent network, low privileges required, low availability impact.

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

4.0 AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Primary rating from NVD.

CVSS VectorNVD

CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/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

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Lifecycle Timeline

CVSS changed

Apr 29, 2026 - 01:11 NVD

3.5 (LOW) 2.0 (LOW)

EUVD ID Assigned

Mar 15, 2026 - 21:35 euvd

EUVD-2025-18807

Analysis Generated

Mar 15, 2026 - 21:35 vuln.today

PoC Detected

Jun 25, 2025 - 20:14 vuln.today

Public exploit code

CVE Published

Jun 21, 2025 - 07:15 cve.org

LOW 2.0

CVE Published

Jun 21, 2025 - 07:15 nvd

LOW 3.5

DescriptionCVE.org

A vulnerability was found in TOTOLINK N300RH 6.1c.1390_B20191101. It has been classified as problematic. This affects an unknown part of the file /boafrm/formFilter of the component HTTP POST Message Handler. The manipulation of the argument url leads to denial of service. The exploit has been disclosed to the public and may be used.

AnalysisAI

Denial of service in TOTOLINK N300RH firmware 6.1c.1390_B20191101 via the /boafrm/formFilter endpoint allows an authenticated attacker on the local network to crash the device by manipulating the 'url' argument. A public exploit is available, but no active exploitation has been reported (not in CISA KEV). EPSS score is low (0.14%), indicating low exploitation likelihood.

Technical ContextAI

The vulnerability resides in the HTTP POST message handler of the TOTOLINK N300RH router, specifically in the /boafrm/formFilter file. The CWE-404 (Improper Resource Shutdown or Release) indicates that the software does not properly release resources after handling a request, leading to a denial of service. The affected product is a consumer-grade router running firmware version 6.1c.1390_B20191101, as identified by the CPE string cpe:2.3:o:totolink:n300rh_firmware:6.1c.1390_b20191101:*:*:*:*:*:*:*.

RemediationAI

No vendor-released patch has been identified at the time of analysis. As a workaround, restrict access to the router's management interface to trusted devices only, e.g., by disabling remote management or using firewall rules to block unauthorized IPs. Note that this may limit administrative convenience. Users should monitor the vendor's website (https://www.totolink.net/) for future firmware updates.