How severe is CVE-2025-11043?

CVE-2025-11043 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2025-11043 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-11043?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-11043 have an EU (EUVD) identifier?

Yes. CVE-2025-11043 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-3213.

When was CVE-2025-11043 published?

CVE-2025-11043 was published on 2026-01-19 and last updated on 2026-06-17.

CVE-2025-11043

CVE-2025-11043 is a high-severity vulnerability with a CVSS 3.x base score of 7.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-295.

Key facts

Severity: High (CVSS 3.x base score 7.4)
CVSS v4: 9.1
EPSS exploit prediction: 0% (11th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-3213
Weakness: CWE-295
Published: 2026-01-19
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2025-11043?: 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.
How severe is CVE-2025-11043?: CVE-2025-11043 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2025-11043 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-11043?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-11043 have an EU (EUVD) identifier?: Yes. CVE-2025-11043 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-3213.
When was CVE-2025-11043 published?: CVE-2025-11043 was published on 2026-01-19 and last updated on 2026-06-17.

References

https://www.br-automation.com/fileadmin/SA25P004-4f45197f.pdf

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