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8.9
CVE-2026-9457: Totolink A8000RU Web Management Interface Firmware Upload Vulnerability
CVE-2026-9457
Summary
A security issue in the Totolink A8000RU's web management interface allows hackers to potentially execute malicious code on the router remotely. This means that a hacker could gain control over the router and potentially use it to attack other devices on the network. We recommend updating the router's firmware to the latest version as soon as possible to fix this issue.
Original title
A vulnerability was determined in Totolink A8000RU 7.1cu.643_b20200521. The affected element is the function UploadFirmwareFile of the file /cgi-bin/cstecgi.cgi of the component Web Management Inte...
Original description
A vulnerability was determined in Totolink A8000RU 7.1cu.643_b20200521. The affected element is the function UploadFirmwareFile of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. This manipulation of the argument FileName causes os command injection. The attack is possible to be carried out remotely. The exploit has been publicly disclosed and may be utilized.
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