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8.9
CVE-2026-9404: Totolink A8000RU Web Management Interface DDNS Injection
CVE-2026-9404
Summary
The Totolink A8000RU's web management interface has a security flaw that allows an attacker to inject malicious commands remotely. This means an attacker can potentially take control of the device. It's essential to update the device to the latest version to fix this issue and prevent potential attacks.
Original title
A vulnerability was identified in Totolink A8000RU 7.1cu.643_b20200521. This affects the function setDdnsCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Such manipul...
Original description
A vulnerability was identified in Totolink A8000RU 7.1cu.643_b20200521. This affects the function setDdnsCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Such manipulation of the argument provider leads to os command injection. The attack may be launched remotely. The exploit is publicly available and might 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: 24 May 2026 · Updated: 31 May 2026 · First seen: 26 May 2026