Buffer Overflow Vulnerability in TOTOLINK Router Product
CVE-2025-67189

9.8CRITICAL

Key Information:

Vendor

TOTOLINK
Status
A950RG
Vendor
CVE Published:
3 February 2026

What is CVE-2025-67189?

A buffer overflow vulnerability has been identified in the setParentalRules interface of the TOTOLINK A950RG router. The issue arises from inadequate validation of the urlKeyword parameter, which leads to the concatenation of multiple user-controlled inputs into a fixed-size stack buffer without proper boundary checks. This oversight allows attackers to exploit the vulnerability, potentially resulting in denial of service or the execution of arbitrary code on the affected device. It is essential for users to apply the necessary patches and updates to mitigate the risks associated with this vulnerability.

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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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