Is CVE-2026-67859 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-67859?

CVE-2026-67859 has a CVSS v3 severity of HIGH (7.5).

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Description

Buffer Overflow vulnerability in open62541 v1.5.5 allows a remote attacker to cause a denial of service via the Discovery/LDS handling.