CVE-2026-4976 - Vulnerability Analysis

Overview

Totolink LR350 9.3.5u.6369_B20220309 contains a buffer overflow caused by manipulation of the "ssid" argument in setWiFiGuestCfg function in /cgi-bin/cstecgi.cgi, letting remote attackers cause memory corruption, exploit requires no special privileges.

Severity & Score

Impact

Remote attackers can cause memory corruption, potentially leading to remote code execution or device compromise.

Mitigation

Update to the latest available version.

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/

Social Media Activity(1 post)

TheHackerWire

@thehackerwire

Mar 27, 2026

🟠 CVE-2026-4976 - High (8.8) 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 launch... 🔗 https://www.thehackerwire.com/vulnerability/CVE-2026-4976/ #CVE #vulnerability #infosec #cybersecurity #security #Tenda #patchstack

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