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 products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| MZ Automation | libiec61850 | < 1.6.2 | 1.6.2 |
Advisories 1
- ICSA-26-211-10 MZ Automation GmbH libiec61850 CISA ICS & IT advisories · Jul 30, 2026