CVE-2025-11043 CRITICAL

CVE-2025-11043: Improper Server Certificate Validation in Automation Studio

Vendor B&R Industrial Automation Gmbh
Product B&R Automation Studio
Weakness CWE-295
Published January 19, 2026
Last update January 20, 2026
View on NVD All CVEs

CVSS base score

9.1/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

What the vulnerability does

01Description

An Improper Certificate Validation vulnerability in the OPC-UA client and ANSL over TLS client used in Automation Studio versions before 6.5 could allow an unauthenticated attacker on the network to position themselves to intercept and interfere with data exchanges.

Key dates

02Disclosure timeline

January 19, 2026 CVE published
January 20, 2026 Record updated