Buffer Overflow in TOTOLINK A950RG Firewall Interface
CVE-2025-67186

9.8CRITICAL

Key Information:

Vendor

TOTOLINK
Status
A950RG
Vendor
CVE Published:
3 February 2026

What is CVE-2025-67186?

The TOTOLINK A950RG V4.1.2cu.5204_B20210112 is susceptible to a buffer overflow vulnerability due to inadequate validation of the 'url' parameter within the setUrlFilterRules interface of the firewall module. This flaw enables remote attackers to exploit the vulnerability, potentially resulting in arbitrary code execution or a denial of service. Proper validation measures need to be implemented to safeguard the device from potential exploits.

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References

https://github.com/SunnyYANGyaya/cuicuishark-sheep-fishIO...

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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