CVE-2026-4976: A vulnerability was found in Totolink LR350 9.3.5u.6369_B20220309. This vulnerability affects the function…
CVE-2026-4976 · Severity: high · CVSS 8.8 · Published 2026-03-27
A vulnerability was found in Totolink LR350 9.3.5u.6369_B20220309. This vulnerability affects the function setWiFiGuestCfg of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument ssid results in buffer overflow. The attack can be launched remotely. The exploit has been made public and could be used.
No. Junglewise Threat Intelligence has no report of CVE-2026-4976 being exploited in the wild.
How severe is CVE-2026-4976?
High severity, with a CVSS score of 8.8, published 27 March 2026.
Which products and versions are affected?
TOTOLINK Lr350, TOTOLINK Lr350 Firmware. The advisory does not name versions.
Is there a fix for CVE-2026-4976?
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.
Am I affected by CVE-2026-4976?
Check whether you run TOTOLINK Lr350 or TOTOLINK Lr350 Firmware. 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.