CVE-2025-67188: Buffer Overflow

Published Feb 3, 2026
·
Updated

A buffer overflow vulnerability exists in TOTOLINK A950RG V4.1.2cu.5204B20210112. The issue resides in the setRadvdCfg interface of the /lib/cstemodules/ipv6.so module. The function fails to properly validate the length of the user-controlled radvdinterfacename parameter, allowing remote attackers to trigger a stack buffer overflow.

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-2025-67188?

CVE-2025-67188 is rated as a high severity vulnerability due to its potential for exploitation via buffer overflow.

2

How do I fix CVE-2025-67188?

To fix CVE-2025-67188, update the TOTOLINK A950RG firmware to a version that addresses this buffer overflow issue.

3

What software versions are affected by CVE-2025-67188?

CVE-2025-67188 affects TOTOLINK A950RG with firmware version 4.1.2cu.5204_B20210112.

4

What type of vulnerability is CVE-2025-67188?

CVE-2025-67188 is identified as a buffer overflow vulnerability impacting the setRadvdCfg interface.

5

Can CVE-2025-67188 be exploited remotely?

Yes, CVE-2025-67188 can be exploited remotely by attackers exploiting the inadequate validation of user-controlled input.

Contact

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