CVE-2025-63464
HighCVSS 7.5Exploitation Probability (EPSS)
Low risk35th percentile - higher than 35% of all known CVEs
Summary
Totolink LR350 v9.3.5u.6369_B20220309 was discovered to contain a stack overflow via the ssid parameter in the sub_42396C function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted request.
Risk Assessment
An attacker can remotely crash or reboot the router, causing network access disruptions for users.
Recommendation
Update the Totolink LR350 firmware to the latest version available from the vendor. If updating is not possible, restrict access to the router's management interface.
Other vulnerabilities in Totolink LR350
See all- CVE-2026-1158High
A buffer overflow vulnerability has been discovered in the Totolink LR350 9.3.5u.6369_B20220309 in the setWizardCfg function of /cgi-bin/cstecgi.cgi. The attack involves manipulating the ssid argument in a POST request and can be performed remotely. The exploit has been publicly released, increasing the risk of exploitation.
- CVE-2026-1157High
Vulnerability in Totolink LR350 router in the setWiFiEasyCfg function of /cgi-bin/cstecgi.cgi. Manipulation of the ssid argument causes a buffer overflow. The attack can be performed remotely, and the exploit is publicly available.
- CVE-2026-1156High
Vulnerability in Totolink LR350 router in the setWiFiBasicCfg function of /cgi-bin/cstecgi.cgi. Manipulation of the ssid argument causes a buffer overflow. The attack can be performed remotely, and the exploit is publicly disclosed.
- CVE-2026-1155High
Vulnerability in Totolink LR350 router in the setWiFiEasyGuestCfg function of /cgi-bin/cstecgi.cgi. Manipulation of the ssid argument causes a buffer overflow. The attack can be performed remotely, and the exploit is publicly available.
- CVE-2023-37149Critical
The TOTOLINK LR350 device version V9.3.5u.6369_B20220309 was found to contain a command injection vulnerability via the FileName parameter in the setUploadSetting function.
- CVE-2023-37148Critical
The TOTOLINK LR350 version V9.3.5u.6369_B20220309 was found to contain a command injection vulnerability via the ussd parameter in the setUssd function.
- CVE-2023-37146Critical
The TOTOLINK LR350 version V9.3.5u.6369_B20220309 was found to contain a command injection vulnerability via the FileName parameter in the UploadFirmwareFile function.
- CVE-2025-63465High
Totolink LR350 v9.3.5u.6369_B20220309 was discovered to contain a stack overflow via the ssid parameter in the sub_422880 function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted request.
Original NVD description (English source)
Totolink LR350 v9.3.5u.6369_B20220309 was discovered to contain a stack overflow via the ssid parameter in the sub_42396C function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted request.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

