CVE-2026-9387
CriticalCVSS 9.8Exploitation Probability (EPSS)
High risk75th percentile - higher than 75% of all known CVEs
Summary
A security flaw was discovered in the web management interface of Totolink A8000RU, leading to OS command injection. It affects the setUpgradeFW function in /cgi-bin/cstecgi.cgi, where the resetFlags argument is mishandled. The attack can be launched remotely and the exploit is public.
Risk Assessment
A remote attacker can force a firmware upgrade or reset settings, potentially causing device disruption or takeover.
Recommendation
Immediately update the router firmware or disable remote access to the management interface until the vulnerability is patched.
Original NVD description (English source)
A security flaw has been discovered in Totolink A8000RU 7.1cu.643_b20200521. The affected element is the function setUpgradeFW of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Performing a manipulation of the argument resetFlags results in os command injection. It is possible to initiate the attack remotely. The exploit has been released to the public and may be used for attacks.