CVE-2026-121599

critical

Description

A vulnerability was detected in TOTOLINK A950RG 4.1.2cu.5268_B20221104. Affected is the function setWiFiMultipleConfig/delWiFiMultipleConfig of the file /cgi-bin/cstecgi.cgi of the component Multi-SSID Configuration. The manipulation of the argument wepkey2/wepkey3 results in stack-based buffer overflow. It is possible to launch the attack remotely. The exploit is now public and may be used.

References

https://www.totolink.net/

https://vuldb.com/vuln/430441/cti

https://vuldb.com/vuln/430441

https://vuldb.com/submit/1022561

https://vuldb.com/cve/CVE-2026-121599

https://gist.github.com/H3rmesk1t/44673654282c9b21bc8971bab7e4b8a3

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-116668

Details

Source: Mitre, NVD

Published: 2026-11-04

Updated: 2026-11-07

Risk Information

CVSS v2

Base Score: 9

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 9.9

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Severity: Critical

CVSS v4

Base Score: 9.4

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

Severity: Critical

EPSS

EPSS: 0.00466