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CVE-2026-66369

MZ Automation libiec61850 Out-of-bounds Read PUBLISHED

Description (CNA)

The GOOSE parser contains an off-by-one boundary-handling flaw that can be triggered by a single unauthenticated Layer-2 multicast frame on the process bus. When specific GOOSE message fields are processed, the parser advances its internal buffer position incorrectly, resulting in a heap out-of-bounds read. On affected platforms, this condition reliably terminates the subscriber process and causes a denial-of-service.

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.