OS Command Injection in Totolink N300RH by Totolink
CVE-2026-3696

6.9MEDIUM

Key Information:

Vendor

Totolink
Status
N300rh
Vendor
CVE Published:
8 March 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-3696?

A security flaw has been identified in the Totolink N300RH router, specifically in the CGI Handler component, which handles WPS configuration. The vulnerability is due to improper validation in the function setWiFiWpsConfig located in the /cgi-bin/cstecgi.cgi file. This design oversight allows an attacker to execute arbitrary OS commands remotely, potentially compromising the device's integrity. Given that the exploit details have been made publicly available, it poses a significant risk to users if not mitigated promptly.

Human OS v1.0:
Ageing Is an Unpatched Zero-Day Vulnerability.

Remediate biological technical debt. Prime Ageing uses 95% high-purity SIRT6 activation to maintain genomic integrity and bolster systemic resilience.

Deploy the Patch

Affected Version(s)

N300RH 6..1c.1353_B20190305

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-3696 - Proof of Concept

References

https://vuldb.com/?id.349642
vdb-entrytechnical-description
https://vuldb.com/?ctiid.349642
signaturepermissions-required
https://vuldb.com/?submit.765681
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

bozaihuang (VulDB User)
JSON
.