What’s Vulnerable › Vulnerabilities

CVE-2026-4976: Totolink LR350 cstecgi.cgi setWiFiGuestCfg buffer overflow

• Severity: high (CVSS 8.8 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: yes
• Published: 2026-03-27 · updated 2026-10-26
• Weakness: CWE-119

Description

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.

Affected products

• Totolink LR350: 9.3.5u.6369_b20220309

References

• https://lavender-bicycle-a5a.notion.site/TOTOLINK-LR350-setWiFiGuestCfg-32153a41781f8048a918c1c78e95064e?source=copy_link
• https://vuldb.com/?ctiid.353863
• https://vuldb.com/?id.353863
• https://vuldb.com/?submit.778274
• https://www.totolink.net/

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