PT-2026-5956 · Totolink · Totolink A950Rg

Published 2026-02-03 · Updated 2026-02-10 · CVE-2025-67188

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions TOTOLINK A950RG version 4.1.2cu.5204 B20210112

Description A buffer overflow condition exists in the software. The issue is located in the setRadvdCfg interface within the /lib/cste modules/ipv6.so module. The setRadvdCfg function does not adequately validate the length of the radvdinterfacename parameter, which is controlled by the user. This lack of validation can lead to a stack buffer overflow, potentially allowing remote attackers to compromise the system.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Buffer Overflow

Weakness Enumeration

CWE-120

Related Identifiers

CVE-2025-67188

Affected Products

Totolink A950Rg

References · 5

• 🔥 https://github.com/SunnyYANGyaya/cuicuishark-sheep-fishIOT/blob/main/ToTolink/A950RG/5024-ipv6-setRadvdCfg-radvdinterfacename-buffer.md · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2025-67188 · Security Note
• https://osv.dev/vulnerability/CVE-2025-67188 · Vendor Advisory
• https://twitter.com/TheHackerWire/status/2019438876608344552 · Twitter Post
• https://t.me/cveNotify/151549 · Telegram Post