Quick answers
- Is CVE-2026-114382 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-114382 being exploited in the wild.
- How severe is CVE-2026-114382?
- Critical severity, with a CVSS score of 10, published 21 October 2026.
- Which products and versions are affected?
- TOTOLINK EX200 5.2.3c.7200.
- Is there a fix for CVE-2026-114382?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-114382 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-114382?
- Check whether you run TOTOLINK EX200 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The vulnerability is a stack-based buffer overflow (CWE-121) in the lan.so handler's setStaticDhcpConfig function (/cgi-bin/cstecgi.cgi). The handler uses strcpy() without length validation to copy an attacker-controlled "comment" parameter into a fixed-size local buffer, which occurs when the "addEffect" parameter is set to 0. Remote unauthenticated attackers can exploit this via HTTP POST requests to crash the service or achieve arbitrary code execution with root privileges.
Affected products
- TOTOLINK EX200 5.2.3c.7200
Timeline
- 2026-10-21: disclosed
- other: Exploit released to the public