CVE-2026-78820

Mitsubishi Electric MELSEC-Q PLC Vulnerability Enables Unauthenticated Memory Corruption via SLMP Protocol Injection (CVE-2026-78820)

Mitsubishi Electric issues an emergency advisory for MELSEC-Q PLCs (CVE-2026-78820, CVSS 9.3) resolving an unauthenticated SLMP protocol injection flaw.