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CVE-2026-114383— TOTOLINK EX200 wireless.so cstecgi.cgi setWiFiAclAddConfig stack-based overflow

Quick assessment

Affected
TOTOLINK EX200
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 TOTOLINK EX200 固件版本 5.2.3c.7200 中发现一个安全弱点。该问题影响无线组件（wireless.so）中文件 的 函数。攻击者可通过操纵 参数引发基于栈的缓冲区溢出。此攻击可远程发起，且利用代码已公开，可能被用于实际攻击。

CVSS 10.0 · Critical
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I. Basic Information for CVE-2026-114383

Vulnerability Information
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Vulnerability Title
TOTOLINK EX200 wireless.so cstecgi.cgi setWiFiAclAddConfig stack-based overflow
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
栈缓冲区溢出
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
TOTOLINK EX200 5.2.3c.7200 cpe:2.3:o:totolink:ex200_firmware:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-114383

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III. Intelligence Information for CVE-2026-114383

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Proof of Concept for CVE-2026-114383 (1)

IV. Related Vulnerabilities

Same product: EX200
Same vendor: TOTOLINK
Same weakness: CWE-121

V. Comments for CVE-2026-114383

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