Is CVE-2026-19846 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-19846?

CVE-2026-19846 has a CVSS v3 severity of HIGH (8.8).

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CVE-2026-19846

Description

A vulnerability was identified in TOTOLINK A800R 4.1.2cu.5137_B20200730. This impacts the function setUrlFilterRules of the file /cgi-bin/cstecgi.cgi of the component firewall.so. The manipulation of the argument url leads to stack-based buffer overflow. The attack can be initiated remotely. The exploit is publicly available and might be used.