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CVE-2026-66720

MEDIUM CVSS: 6.5 Published: 2026-07-30 Modified: 2026-07-31

Description

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 Platforms

Unknown

Weakness Type

CWE-125

References