CVE-2026-114382TOTOLINK EX200 lan.so cstecgi.cgi setStaticDhcpConfig stack-based overflow

Description

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.

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

References and patches

• VDB-424741 | TOTOLINK EX200 lan.so cstecgi.cgi setStaticDhcpConfig stack-based overflow vdb-entrytechnical-description
• VDB-424741 | CTI Indicators (IOB, IOC, IOA) signaturepermissions-required
• CVE-2026-114382 | CVE Analysis and Report third-party-advisory
• Submit #1019881 | TOTOLINK EX200 V5.2.3c.7200 Stack-based Buffer Overflow third-party-advisory
• https://github.com/qwq-nm/CVE/blob/f5d61361eb7d846479f6d76c0aa4273e9af46d27/CVE1/report.md exploit
• https://www.totolink.net/ product