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CVE-2026-66720

MZ Automation libiec61850 Out-of-bounds Read PUBLISHED

Description (CNA)

The GOOSE subscriber component improperly validates the UTC timestamp field in unauthenticated IEC 61850 GOOSE (EtherType 0x88B8) Layer-2 multicast messages. A specially crafted GOOSE frame containing an undersized timestamp field can trigger a heap out-of-bounds read during message processing, causing the process to crash and resulting in a denial-of-service condition.

Affected (CNA)

Vendor / productVersions
MZ Automation GmbH / libiec61850affected 0 before 1.6.2; unaffected 1.6.2

CWE

CWE-125

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.