Is CVE-2026-3821 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-3821?

CVE-2026-3821 has a CVSS v3 severity of HIGH (8.8).

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CVE-2026-3821

Description

Supermicro (SMC) SMASH services contain an Arbitrary code execution issue in X14DBG-DAP and X14DBI. An authorized attacker can exploit SMASH’s input capability to compromise data integrity or launch a Denial-of-Service (DoS) attack against the BMC.