vulnerability MZ Automation libIEC61850 MZ Automation libIEC61850 versions 1.0.0 through 1.6.1 are vulnerable to several stack and heap-based buffer overflows, potentially allowing an unauthenticated attacker to crash critical IEC 61850 services or execute arbitrary code. This impacts critical infrastructure sectors like manufacturing, energy, and transporta… CISA Advisories · Jul 23, 2026 High CVE-2026-50039CVE-2026-49035CVE-2026-50103iec61850buffer overflowindustrial control systems