CVE-2026-121597

critical

Description

A weakness has been identified in TOTOLINK A950RG 4.1.2cu.5268_B20221104. This affects the function setAppEasyWizardConfig of the file /cgi-bin/cstecgi.cgi of the component Easy Setup Wizard Handler. Executing a manipulation of the argument functionType can lead to stack-based buffer overflow. The attack may be performed from remote. The exploit has been made available to the public and could be used for attacks.

References

https://www.totolink.net/

https://vuldb.com/vuln/430439/cti

https://vuldb.com/vuln/430439

https://vuldb.com/submit/1022558

https://vuldb.com/cve/CVE-2026-121597

https://gist.github.com/H3rmesk1t/49d6ccded59379651568e0bdc6b5624c

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-116646

Details

Source: Mitre, NVD

Published: 2026-11-04

Updated: 2026-11-09

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: 0.00601