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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.

CVE-2025-11043 identifies a critical security vulnerability in B&R Industrial Automation GmbH's Automation Studio software, specifically versions before 6.5. The vulnerability stems from improper certificate validation (CWE-295) within the OPC-UA client and ANSL over TLS client components. OPC-UA (Open Platform Communications Unified Architecture) is widely used in industrial automation for secure and reliable data exchange between devices and control systems. The improper validation flaw allows an unauthenticated attacker positioned on the same network segment to perform man-in-the-middle (MitM) attacks by intercepting and potentially altering communications between Automation Studio clients and servers. This compromises the confidentiality and integrity of sensitive industrial control data. The CVSS 4.0 vector (AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N) indicates network attack vector, low complexity, no privileges or user interaction required, and high impact on confidentiality and integrity. Although no exploits are currently known in the wild, the vulnerability poses a significant risk due to the critical role of Automation Studio in industrial environments. The lack of patch links suggests that a fix may be forthcoming or that users should upgrade to version 6.5 or later to remediate the issue. Attackers exploiting this flaw could disrupt industrial processes, steal sensitive operational data, or inject malicious commands, potentially causing physical damage or operational downtime.

Detailed information about CVE-2025-11043: CWE-295 Improper Certificate Validation in B&R Industrial Automation GmbH B&R Automation Studio affecting B&R Industr

CVE-2025-11043: CWE-295 Improper Certificate Validation in B&R Industrial Automation GmbH B&R Automation Studio - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2025-11043: CWE-295 Improper Certificate Validation in B&R Industrial Automation GmbH B&R Automation Studio

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