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CRITICALCVE-2026-9387Published Modified CNA VulDB

CVE-2026-9387: Totolink A8000RU Web Management cstecgi.cgi setUpgradeFW os command injection

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.

Metrics

CVSS v4.0
9.3
Severity
CRITICAL
Fixed in
—
Affected Products
1
Affected packages
  • Totolink / A8000RU
    7.1cu.643_b20200521
CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
References
CVE-2026-9387: Totolink A8000RU Web Management cstecgi.cgi setUpgradeFW os command injection | HarborGuard CVE