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8.9
CVE-2026-9455: Totolink A8000RU: Malicious File Upload via Web Interface
CVE-2026-9455
Summary
A vulnerability in the Totolink A8000RU's web interface allows an attacker to upload malicious files, potentially taking control of the router. This could happen if someone with malicious intent uploads a file that the router doesn't expect. To stay safe, consider updating your router's software or following the manufacturer's instructions for securing the device.
Original title
A vulnerability has been found in Totolink A8000RU 7.1cu.643_b20200521. This issue affects the function UploadOpenVpnCert of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface....
Original description
A vulnerability has been found in Totolink A8000RU 7.1cu.643_b20200521. This issue affects the function UploadOpenVpnCert of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. The manipulation of the argument FileName leads to os command injection. Remote exploitation of the attack is possible. The exploit has been disclosed to the public and may be used.
nvd CVSS2.0
10.0
nvd CVSS3.1
9.8
nvd CVSS4.0
8.9
Vulnerability type
CWE-77
Command Injection
CWE-78
OS Command Injection
Published: 25 May 2026 · Updated: 1 Jun 2026 · First seen: 26 May 2026