SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2017-12089

An exploitable denial of service vulnerability exists in the program download functionality of Allen Bradley Micrologix 1400 Series B FRN 21.2 and before.

HIGH 7.5EPSS 4.83%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (4.83%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

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.

CVSS 3.0
7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
4.83% probability · 92th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Affected
rockwellautomation/micrologix 1400 b firmware
Source
talos-cna@cisco.com
EPSS trend
0%3%5%27 October 2026: 4.83%27 October 202627 October 2026

EPSS 4.8% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.