CVE-2025-11043 Details
Description
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.
A vulnerability exists in the OPC-UA client and ANSL over TLS client in B&R Automation Studio versions prior to 6.5. This vulnerability allows an unauthenticated attacker on the network to intercept and interfere with data exchanges by spoofing a trusted server. The issue arises from insufficient validation of server certificates, which could enable an attacker to masquerade as a trusted entity during communications.
Users are advised to update to B&R Automation Studio version 6.5, where this vulnerability has been addressed. The update process is described in the user manual.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Jan 19, 2026CISA-ADP
Assessed Jan 20, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://www.br-automation.com/fileadmin/SA25P004-4f45197f.pdf | [email protected] | AdvisoryRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-295 | Improper Certificate Validation | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| ABB Automation Studio | All versions |
CPE
Remediation
| |
Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jan 19, 2026 | New CVE Received | [email protected] |