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CVE-2025-11043

Improper Server Certificate Validation in Automation Studio

Published: Jan 19, 2026Updated: Jan 26, 2026 Sources: CVE List NVD csafCWE-295
NVD MITRE
7.4CVSSHIGH
EPSS Score
0.2%
Top 89.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:HI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-295

Affected Products

B&R Automation StudioB&R Industrial Automation GmbH
Embedded
ICS / OT / IoT / plc-scada-hmi
b&r industrial automation gmbhcommercialICS / OT / IoTaka b&r

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

https://www.br-automation.com/fileadmin/SA25P004-4f45197f.pdf
br-automation.com
https://psirt.abb.com/csaf/2026/sa25p004.json
psirt.abb.com
https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2026/icsa-26-125-04.json
raw.githubusercontent.com
and 11 more references View all →

Timeline

Published
Jan 19, 2026
Last Updated
Jan 26, 2026

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