How severe is CVE-2025-9161?

CVE-2025-9161 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-9161 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-9161?

CVE-2025-9161 affects Rockwellautomation Factorytalk Optix. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-9161?

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-2025-9161 have an EU (EUVD) identifier?

Yes. CVE-2025-9161 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-27247.

When was CVE-2025-9161 published?

CVE-2025-9161 was published on 2025-09-09 and last updated on 2026-06-17.

CVE-2025-9161

CVE-2025-9161 is a high-severity vulnerability in Rockwellautomation Factorytalk Optix with a CVSS 3.x base score of 8.8. 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-77.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v4: 7.3
EPSS exploit prediction: 1% (44th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-27247
Weakness: CWE-77
Affected product: Rockwellautomation Factorytalk Optix
Published: 2025-09-09
Last modified: 2026-06-17

Description

A security issue exists within FactoryTalk Optix MQTT broker due to the lack of URI sanitization. This flaw enables the loading of remote Mosquito plugins, which can be used to achieve remote code execution.

Frequently asked questions

What is CVE-2025-9161?: A security issue exists within FactoryTalk Optix MQTT broker due to the lack of URI sanitization. This flaw enables the loading of remote Mosquito plugins, which can be used to achieve remote code execution.
How severe is CVE-2025-9161?: CVE-2025-9161 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-9161 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-9161?: CVE-2025-9161 affects Rockwellautomation Factorytalk Optix. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-9161?: 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-2025-9161 have an EU (EUVD) identifier?: Yes. CVE-2025-9161 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-27247.
When was CVE-2025-9161 published?: CVE-2025-9161 was published on 2025-09-09 and last updated on 2026-06-17.

References

https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1742.html

Affected products (1)

cpe:2.3:a:rockwellautomation:factorytalk_optix:*:*:*:*:*:*:*:*

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