CVE-2025-11043

Improper Server Certificate Validation in Automation Studio

Published Jan 19, 2026 CVSS 4.0 · 9.1 Critical EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Br-automation
Br-automation automation Studio
Br-automation studio
Vendors & Products Br-automation
Br-automation automation Studio
Br-automation studio
Type Values Removed Values Added
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.
Title Improper Server Certificate Validation in Automation Studio
Weaknesses CWE-295
References
Metrics cvssV3_1

{'score': 7.4, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N'}

cvssV4_0

{'score': 9.1, '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
ABB
Published
Updated
Jan 20, 2026, 8:06 PM
Reserved
Sep 26, 2025, 9:17 AM
Status
Deferred
Published
Jan 19, 2026, 4:15 PM
Modified
Jun 17, 2026, 8:29 AM