High (7.5) in rockwellautomation micrologix 1400 b firmware. EPSS 4.8% chance of exploitation in the next 30 days.
An exploitable denial of service vulnerability exists in the program download functionality of Allen Bradley Micrologix 1400 Series B FRN 21.2 and before. A specially crafted packet can cause a device fault resulting in halted operations. An attacker can send an unauthenticated packet to trigger this vulnerability.
Severity
CVSS 3.0
7.5 high
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
4.8% chance of exploitation in the next 30 days; higher than 91% of CVEs (scores of 2026-10-31)