CVE-2026-11946: open62541 1.4.0 through 1.4.16, 1.5.0 through 1.5.4, master

CVE-2026-11946. CVSS 3.1 base score 7.5 (HIGH, Source advisory). EPSS 0.00524 (percentile 0.4416), scored 25-Oct-2026.

Affected technology

open62541 · 1.4.0 through 1.4.16, 1.5.0 through 1.5.4, master
open62541 project / o6 Automation GmbH

Component: Not specified by the source

Attack conditions (Source advisory, CVSS 3.1): Network (remote) · No privileges required · No user interaction required

What an attacker can do

An unauthenticated remote attacker can exhaust server memory via the GetEndpoints Discovery Service in open62541. Source advisory’s CVSS 3.1 assessment (base score 7.5/10) rates confidentiality and integrity impact as none; availability impact as high.

Published 25-Oct-2026 21:45 UTC

CWE: CWE-770, CWE-789
CCR priority: 30.1 /100 (P4)
CVSS 3.1: 7.5 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H · Source advisory
EPSS: 0.00524 · percentile 0.4416 · 2026-10-25
KEV: no

Provenance

NVD CVE API 2.0 · Source record · observed 2026-10-25 21:44:36.062275+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-11946.html