CVE-2026-9384
CriticalCVSS 9.8Exploitation Probability (EPSS)
High risk75th percentile - higher than 75% of all known CVEs
Summary
A vulnerability was discovered in the Totolink A8000RU router firmware 7.1cu.643_b20200521. The setDiagnosisCfg function in /cgi-bin/cstecgi.cgi fails to properly sanitize the ip argument, allowing remote OS command injection.
Risk Assessment
An attacker can remotely take over the router, potentially leading to data theft, malware installation, or inclusion of the device in a botnet.
Recommendation
Immediately update the router firmware and consider disabling remote management access if not required.
Other vulnerabilities in Totolink A8000RU
See all- CVE-2026-9478Critical
In the Totolink A8000RU web management interface, the setParentalRules function is vulnerable to OS command injection via the enable argument.
- CVE-2026-9477Critical
In the Totolink A8000RU web management interface, the setAccessDeviceCfg function is vulnerable to OS command injection via the mac argument.
- CVE-2026-9476Critical
In the Totolink A8000RU web management interface, the setPasswordCfg function is vulnerable to OS command injection via the admpass argument.
- CVE-2026-9475Critical
In the Totolink A8000RU web management interface, the setIpQosRules function is vulnerable to OS command injection via the Comment argument.
- CVE-2026-9458Critical
A vulnerability in the Totolink A8000RU router version 7.1cu.643_b20200521 allows a remote attacker to inject OS commands via the enabled argument in the setWanCfg function of the web management interface.
- CVE-2026-9457Critical
A vulnerability in the Totolink A8000RU router version 7.1cu.643_b20200521 allows a remote attacker to inject OS commands via the FileName argument in the UploadFirmwareFile function of the web management interface.
- CVE-2026-9456Critical
In the Totolink A8000RU web management interface, the setOpenVpnCfg function is vulnerable to OS command injection via the enabled argument.
- CVE-2026-9455Critical
In the Totolink A8000RU web management interface, the UploadOpenVpnCert function is vulnerable to OS command injection via the FileName argument.
- CVE-2026-9454Critical
In the Totolink A8000RU web management interface, the setOpenVpnCertGenerationCfg function is vulnerable to OS command injection via the servername argument.
- CVE-2026-9436Critical
A vulnerability has been found in the Totolink A8000RU router version 7.1cu.643_b20200521, allowing OS command injection via the setL2tpServerCfg function in /cgi-bin/cstecgi.cgi by manipulating the enable argument. The attack can be executed remotely, and an exploit has been published.
Original NVD description (English source)
A vulnerability was found in Totolink A8000RU 7.1cu.643_b20200521. This vulnerability affects the function setDiagnosisCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. The manipulation of the argument ip results in os command injection. The attack can be executed remotely. The exploit has been made public and could be used.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS