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CVE-2025-9161VulnerabilityPublished

CVE-2025-9161: Rockwell Automation FactoryTalk Optix · Command Injection

Affects Rockwell Automation FactoryTalk OptixSource CVE Database V5

0

Not known to be exploited · CVSS 7.3 High.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 4.0 base score
7.3High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.5% chance of exploitation in 30 days – higher than 45% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 9 Sep 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-25.

What to do

Affected software

ProductAffectedFixed in
Rockwell Automation FactoryTalk OptixAffected
  • >=1.5.0 <=1.5.7
Fixed in–

AI-suggested

European organizations should implement a multi-layered mitigation strategy beyond generic patching advice. First, they should immediately audit and restrict network access to FactoryTalk Optix MQTT brokers, limiting exposure to trusted internal networks and employing network segmentation to isolate OT environments from IT networks. Deploy strict firewall rules and intrusion detection/prevention systems (IDS/IPS) tuned to detect anomalous MQTT traffic or attempts to load unauthorized plugins. Implement robust authentication and authorization controls, ensuring that only authorized users and systems can interact with the MQTT broker. Conduct user awareness training to reduce the risk of social engineering attacks that could facilitate user interaction requirements. Monitor logs and network traffic for unusual activity indicative of exploitation attempts. Since no patches are currently available, consider deploying application-layer proxies or web application firewalls (WAFs) capable of sanitizing or blocking malicious URI requests targeting the MQTT broker. Engage with Rockwell Automation for updates and apply patches promptly once released. Finally, develop and test incident response plans tailored to OT environments to quickly contain and remediate any compromise.

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.

References

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