Is CVE-2026-19815 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-19815?

CVE-2026-19815 has a CVSS v3 severity of HIGH (8.8).

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CVE-2026-19815

Description

A flaw has been found in TOTOLINK A800R 4.1.2cu.5137_B20200730. Affected by this vulnerability is the function setParentalRules of the file /cgi-bin/cstecgi.cgi of the component firewall.so. Executing a manipulation of the argument urlKeyword can lead to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been published and may be used.