CVE-2025-67187: Buffer Overflow

Published Feb 3, 2026
·
Updated

A stack-based buffer overflow vulnerability was identified in TOTOLINK A950RG V4.1.2cu.5204B20210112. The flaw exists in the setIpQosRules interface of /lib/cstemodules/firewall.so where the comment parameter is not properly validated for length.

Affected Software

3 affected components
TOTOLINK A950RG
All of the following
TOTOLINK A950rg Firmware=4.1.2cu.5204_b20210112
TOTOLINK A950RG

Event History

Feb 3, 2026
CVE Published
via MITRE·12:00 AM
Data Sourced
via MITRE·12:00 AM
Description
Data Sourced
via NVD·06:16 PM
DescriptionSeverityWeaknessAffected Software
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Frequently Asked Questions

1

What is the severity of CVE-2025-67187?

CVE-2025-67187 is classified as a high-severity stack-based buffer overflow vulnerability.

2

How do I fix CVE-2025-67187?

To fix CVE-2025-67187, update the TOTOLINK A950RG to the latest firmware version that addresses this vulnerability.

3

What are the potential impacts of CVE-2025-67187?

The potential impacts of CVE-2025-67187 include unauthorized code execution and system instability due to buffer overflow.

4

Is the TOTOLINK A950RG affected by CVE-2025-67187?

Yes, the TOTOLINK A950RG version 4.1.2cu.5204_B20210112 is affected by CVE-2025-67187.

5

What component of the TOTOLINK A950RG is vulnerable in CVE-2025-67187?

The vulnerable component in CVE-2025-67187 is the setIpQosRules interface in the /lib/cste_modules/firewall.so.

Contact

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