CVE-2026-9140
UDP unicast storm triggers DoS on 1719-AENTR network device.
Is CVE-2026-9140 being exploited?
Not confirmed. CVE-2026-9140 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 0.43% probability of exploitation in the next 30 days.
How severe is CVE-2026-9140?
CVE-2026-9140 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-2026-9140?
Yes. A fix has been recorded for CVE-2026-9140. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-9140 affect?
CVE-2026-9140 affects 1719-AENTR network device, Firmware of 1719-AENTR. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-9140?
Apply UDP rate-limits/ACLs, segment affected devices, contact vendor for firmware patch.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote UDP unicast storm can overload the device, causing complete loss of communications until power-cycled (denial of service).
Immediate action required
- affected3.011
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.