AUGUST 4, 2026
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Case File

CVE-2020-12526

MEDIUM · CVSS 5.3 EPSS 0.95%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-05-13 · Last synced 2026-08-04

CyberRota Analysis

AI analysis pending.

CVE
CVE-2020-12526
Severity
MEDIUM
CVSS
5.3
EPSS
0.95%

Original NVD Description

TwinCAT OPC UA Server in versions up to 2.3.0.12 and IPC Diagnostics UA Server in versions up to 3.1.0.1 from Beckhoff Automation GmbH & Co. KG are vulnerable to denial of service attacks. The attacker needs to send several specifically crafted requests to the running OPC UA server. After some of these requests the OPC UA server is no longer responsive to any client. This is without effect to the real-time functionality of IPCs.