---
id: CVE-2026-114383
title: >-
  TOTOLINK EX200 wireless.so cstecgi.cgi setWiFiAclAddConfig stack-based
  overflow
summary: >-
  A weakness has been identified in TOTOLINK EX200 5.2.3c.7200. This impacts the
  function setWiFiAclAddConfig of the file /cgi-bin/cstecgi.cgi of the component
  wireless.so. This manipulation of the argument macAddress causes 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: '2026-10-21T21:45:18.906Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-114383'
references:
  - url: 'https://vuldb.com/vuln/424742'
    label: >-
      VDB-424742 | TOTOLINK EX200 wireless.so cstecgi.cgi setWiFiAclAddConfig
      stack-based overflow
  - url: 'https://vuldb.com/vuln/424742/cti'
    label: 'VDB-424742 | CTI Indicators (IOB, IOC, IOA)'
  - url: 'https://vuldb.com/cve/CVE-2026-114383'
    label: CVE-2026-114383 | CVE Analysis and Report
  - url: 'https://vuldb.com/submit/1019883'
    label: 'Submit #1019883 | TOTOLINK EX200 V5.2.3c.7200 Stack-based Buffer Overflow'
  - url: >-
      https://github.com/qwq-nm/CVE/blob/f5d61361eb7d846479f6d76c0aa4273e9af46d27/CVE2/report.md
  - url: 'https://www.totolink.net/'
tags:
  - cve.org
ingestedAt: '2026-10-21T22:18:33.746Z'
---

## Overview

A weakness has been identified in TOTOLINK EX200 5.2.3c.7200. This impacts the function setWiFiAclAddConfig of the file /cgi-bin/cstecgi.cgi of the component wireless.so. This manipulation of the argument macAddress causes stack-based buffer overflow. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks.

## Affected

- `EX200 5.2.3c.7200`

## Remediation

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