CVE-2025-9279
DoS on ArmorStart LT triggers reboot and Link State Monitor downtime.
Is CVE-2025-9279 being exploited?
Not confirmed. CVE-2025-9279 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 0.55% probability of exploitation in the next 30 days.
How severe is CVE-2025-9279?
CVE-2025-9279 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-2025-9279?
Yes. A fix has been recorded for CVE-2025-9279. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2025-9279 affect?
CVE-2025-9279 affects ArmorStart LT. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2025-9279?
Apply firmware update when released.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Device reboot on DoS during EtherNet/IP tests; Link State Monitor offline for seconds.
Patch when possible
- 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.