CVE-2026-121600

CRITICAL 9.9

TOTOLINK A950RG MAC Filter cstecgi.cgi setMacFilterRules stack-based overflow

CVSS Score

9.9

EPSS Score

0.0%

EPSS Percentile

0th

A flaw has been found in TOTOLINK A950RG 4.1.2cu.5268_B20221104. Affected by this vulnerability is the function setMacFilterRules of the file /cgi-bin/cstecgi.cgi of the component MAC Filter Handler. This manipulation of the argument addEffect causes stack-based buffer overflow. The attack can be initiated remotely. The exploit has been published 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/430442 vuldb.com: https://vuldb.com/vuln/430442/cti vuldb.com: https://vuldb.com/cve/CVE-2026-121600 vuldb.com: https://vuldb.com/submit/1022562 gist.github.com: https://gist.github.com/H3rmesk1t/217c00b12e04fcde07c453a55579f808 totolink.net: https://www.totolink.net/

Credits

🔍 LiuYijun_JX.SGCC (VulDB User)