How severe is CVE-2025-3450?

CVE-2025-3450 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.

Is CVE-2025-3450 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-3450?

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

Does CVE-2025-3450 have an EU (EUVD) identifier?

Yes. CVE-2025-3450 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-31925.

When was CVE-2025-3450 published?

CVE-2025-3450 was published on 2025-10-07 and last updated on 2026-06-17.

CVE-2025-3450

CVE-2025-3450 is a critical-severity vulnerability with a CVSS 3.x base score of 10.0. 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-413.

Key facts

Severity: Critical (CVSS 3.x base score 10.0)
CVSS v4: 9.3
EPSS exploit prediction: 0% (17th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-31925
Weakness: CWE-413
Published: 2025-10-07
Last modified: 2026-06-17

Description

An Improper Resource Locking vulnerability in the SDM component of B&R Automation Runtime versions before 6.3 and before Q4.93 may allow an unauthenticated network-based attacker to delete data causing denial of service conditions.

Frequently asked questions

What is CVE-2025-3450?: An Improper Resource Locking vulnerability in the SDM component of B&R Automation Runtime versions before 6.3 and before Q4.93 may allow an unauthenticated network-based attacker to delete data causing denial of service conditions.
How severe is CVE-2025-3450?: CVE-2025-3450 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.
Is CVE-2025-3450 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-3450?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-3450 have an EU (EUVD) identifier?: Yes. CVE-2025-3450 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-31925.
When was CVE-2025-3450 published?: CVE-2025-3450 was published on 2025-10-07 and last updated on 2026-06-17.

References

https://www.br-automation.com/fileadmin/SA25P002-f6a69e61.pdf

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