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CVE PROGRAM SOURCE RECORD7.1 High

CVE-2026-66364

MZ Automation libiec61850 Out-of-bounds Read

Description

The GOOSE payload parser contains a boundary handling flaw that can be triggered by a single unauthenticated Layer 2 multicast frame on the process bus. When processing specific payload fields, an attacker controlled inner element length may exceed its enclosing length, causing the parser to over read by one byte. This out-of-bounds read reliably terminates the subscriber process, resulting in a denial-of-service condition.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

MZ Automation GmbH libiec61850

Default version status: unaffected

  • 0 to < 1.6.2affected
  • 1.6.2unaffected

References