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CVE-2026-52134

CriticalPublished

An issue in the parseGoosePayload() function (/goose/goose_receiver.c) of libiec61850 v1.6 allows attackers to bypass authentication via a captured GOOSE frame.

Published: Jul 31, 2026
Updated: Aug 3, 2026
Assigning CNA: mitre
Evidence observed: Aug 6, 2026

Primary CVSS

9.8/ 10Critical

nvd · CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS probability estimate

0.6%

Low · next 30 days

Percentile: 48.3%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

An issue in the parseGoosePayload() function (/goose/goose_receiver.c) of libiec61850 v1.6 allows attackers to bypass authentication via a captured GOOSE frame.

Sources

CVE-2026-52134-libiec61850Research
Public technical advisory and reproduction evidence for CVE-2026-52134 affecting GOOSE replay handling in libiec61850 v1.6.

Responsible use

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