CVE-2026-121598

CRITICAL 9.9

TOTOLINK A950RG Basic Wireless Configuration cstecgi.cgi strcpy stack-based overflow

CVSS Score

9.9

EPSS Score

0.0%

EPSS Percentile

0th

A security vulnerability has been detected in TOTOLINK A950RG 4.1.2cu.5268_B20221104. This impacts the function strcpy of the file /cgi-bin/cstecgi.cgi of the component Basic Wireless Configuration Handler. The manipulation of the argument wepkey leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed publicly and may be used.

CWE	CWE-121 CWE-119
Vendor	totolink
Product	a950rg
Published	Nov 4, 2026

Stay Ahead of the Next One

Get instant alerts for totolink a950rg

Be the first to know when new critical vulnerabilities affecting totolink a950rg are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

TOTOLINK / A950RG

4.1.2cu.5268_B20221104

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/430440 vuldb.com: https://vuldb.com/vuln/430440/cti vuldb.com: https://vuldb.com/cve/CVE-2026-121598 vuldb.com: https://vuldb.com/submit/1022559 gist.github.com: https://gist.github.com/H3rmesk1t/e283a4f3224cbd0a57d4392de60bd2c6 totolink.net: https://www.totolink.net/

Credits

🔍 LiuYijun_JX.SGCC (VulDB User)