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

Severity: critical (CVSS 10.0 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-21 · updated 2026-10-28
Weakness: CWE-119

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.

Affected products

TOTOLINK EX200: 5.2.3c.7200

References

https://github.com/qwq-nm/CVE/blob/f5d61361eb7d846479f6d76c0aa4273e9af46d27/CVE1/report.md
https://vuldb.com/cve/CVE-2026-114382
https://vuldb.com/submit/1019881
https://vuldb.com/vuln/424741
https://vuldb.com/vuln/424741/cti
https://www.totolink.net/

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