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IoT

CVE-2025-9280

8.7
High
EPSS 0.44%Patch availableJan 20, 2026

ArmorStart LT DoS via fuzzing; device becomes unresponsive and reboots.

common questions

Is CVE-2025-9280 being exploited?

Not confirmed. CVE-2025-9280 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.44% probability of exploitation in the next 30 days.

How severe is CVE-2025-9280?

CVE-2025-9280 is rated High with a CVSS score of 8.7. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.

Is there a patch for CVE-2025-9280?

Yes. A fix has been recorded for CVE-2025-9280. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.

What does CVE-2025-9280 affect?

CVE-2025-9280 affects ArmorStart LT devices. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.

What should I do about CVE-2025-9280?

Monitor devices; isolate affected units; patch when available.

Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.

executive summary
technical analysis
affected
ArmorStart LT devices
impact

DoS via fuzz testing; attacker can crash device, forcing reboot and potential loss of control.

action required

Monitor only

affected versions
Rockwell Automation ArmorStart® LT
  • affectedV2.002 and below

As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.

how to fix
Remediation steps are tailored for users whose stack is affected. Add this technology to your stack to see the fix checklist.
references
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