CVE-2026-10573
Crafted CIP messages can fault 1734 POINT I/O modules, causing Denial-of-Service requiring restart.
Is CVE-2026-10573 being exploited?
Not confirmed. CVE-2026-10573 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 0.21% probability of exploitation in the next 30 days.
How severe is CVE-2026-10573?
CVE-2026-10573 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-2026-10573?
Yes. A fix has been recorded for CVE-2026-10573. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-10573 affect?
CVE-2026-10573 affects 1734 POINT I/O module, EtherNet/IP (CIP) I/O networks, PLCs using POINT I/O modules. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-10573?
Isolate devices, block untrusted CIP traffic, apply vendor patch when available
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote Denial-of-Service: specially crafted CIP/EtherNet/IP messages can force the 1734 POINT I/O module into a faulted state, disrupting I/O and PLC operations until restarted.
Immediate action required
- affected3.023
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.