---
id: CVE-2026-114382
title: TOTOLINK EX200 lan.so cstecgi.cgi setStaticDhcpConfig stack-based overflow
summary: >-
  A security flaw has been discovered in TOTOLINK EX200 5.2.3c.7200. This
  affects the function setStaticDhcpConfig of the file /cgi-bin/cstecgi.cgi of
  the component lan.so. The manipulation of the argument Comment results in
  stack-based bu…
severity: critical
cvss: 10
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R'
cvssSource: cna
cwe:
  - CWE-121
  - CWE-119
vendor: TOTOLINK
product: EX200
affected:
  - EX200 5.2.3c.7200
published: '2026-10-21'
updated: '2026-10-21'
sourceUpdated: '2026-10-21T21:30:10.698Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-114382'
references:
  - url: 'https://vuldb.com/vuln/424741'
    label: >-
      VDB-424741 | TOTOLINK EX200 lan.so cstecgi.cgi setStaticDhcpConfig
      stack-based overflow
  - url: 'https://vuldb.com/vuln/424741/cti'
    label: 'VDB-424741 | CTI Indicators (IOB, IOC, IOA)'
  - url: 'https://vuldb.com/cve/CVE-2026-114382'
    label: CVE-2026-114382 | CVE Analysis and Report
  - url: 'https://vuldb.com/submit/1019881'
    label: 'Submit #1019881 | TOTOLINK EX200 V5.2.3c.7200 Stack-based Buffer Overflow'
  - url: >-
      https://github.com/qwq-nm/CVE/blob/f5d61361eb7d846479f6d76c0aa4273e9af46d27/CVE1/report.md
  - url: 'https://www.totolink.net/'
tags:
  - cve.org
ingestedAt: '2026-10-21T22:18:33.749Z'
---

## Overview

A security flaw has been discovered in TOTOLINK EX200 5.2.3c.7200. This affects the function setStaticDhcpConfig of the file /cgi-bin/cstecgi.cgi of the component lan.so. The manipulation of the argument Comment results in stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been released to the public and may be used for attacks.

## Affected

- `EX200 5.2.3c.7200`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.