CVE-2026-52134 Auth bypass in n/a
Attackers can bypass authentication in libiec61850 by replaying captured GOOSE frames, compromising IEC 61850 communication integrity.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-52134?
CVE-2026-52134 is a critical authentication bypass vulnerability in n/a, published on 31 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An issue in the parseGoosePayload() function (/goose/goose_receiver.c) of libiec61850 v1.6 allows attackers to bypass authentication via a captured GOOSE frame.
Weakness: CWE-284
Which versions are affected by CVE-2026-52134?
How do I fix CVE-2026-52134?
No fix has been published for CVE-2026-52134 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-52134 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-52134 exists.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-4pg7-2q5x-32w4.