CVE-2025-46060
CriticalCVSS 9.8Exploitation Probability (EPSS)
Elevated risk53th percentile - higher than 53% of all known CVEs
Summary
A buffer overflow vulnerability was found in the TOTOLINK N600R router firmware version 4.3.0cu.7866_B2022506. A remote attacker can exploit the UPLOAD_FILENAME component to execute arbitrary code.
Risk Assessment
The risk involves potential remote code execution by an unauthenticated attacker, leading to full compromise of the router and the network it serves.
Recommendation
Immediately update the TOTOLINK N600R firmware to the latest available version. If no update is available, restrict management interface access to trusted networks only.
Other vulnerabilities in TOTOLINK N600R
See all- CVE-2026-79911Critical
TOTOLINK N600R 4.3.0cu.7647_B20210106 has a stack-based buffer overflow vulnerability in the setSystemConfig function of /cgi-bin/cstecgi.cgi. Manipulation of the Hostname argument leads to buffer overflow, which can be exploited remotely. The exploit has been publicly disclosed.
- CVE-2025-51390Critical
A command injection vulnerability was discovered in the TOTOLINK N600R router running firmware version V4.3.0cu.7647_B20210106. The issue resides in the setWiFiWpsConfig function via the pin parameter.
- CVE-2026-82555Low
Vulnerability in TOTOLINK N600R in the loginAuth function of cstecgi.cgi leads to insufficiently random values. Remote attack is possible but has high complexity and difficulty.
- CVE-2026-79912High
A vulnerability was detected in TOTOLINK N600R 4.3.0cu.7647_B20210106. The impacted element is the function getCurrentTime of the file /cgi-bin/cstecgi.cgi. Performing a manipulation of the argument ntp_server results in command injection. The attack can be initiated remotely. The exploit is now public and may be used.
- CVE-2025-11444High
A security vulnerability has been detected in TOTOLINK N600R up to 4.3.0cu.7866_B20220506 in the setWiFiBasicConfig function of the /cgi-bin/cstecgi.cgi file in the HTTP Request Handler component. Manipulation of the wepkey argument leads to buffer overflow. The attack can be launched remotely, and the exploit has been publicly disclosed.
Original NVD description (English source)
Buffer Overflow vulnerability in TOTOLINK N600R v4.3.0cu.7866_B2022506 allows a remote attacker to execute arbitrary code via the UPLOAD_FILENAME component
Vulnerability data from NVD (NIST) · CISA KEV · EPSS