CVE-2021-33012EPSS p77.6%

CVE-2021-33012CVE-2021-33012

rockwellautomation / micrologix_1100_firmware

Description

Rockwell Automation MicroLogix 1100, all versions, allows a remote, unauthenticated attacker sending specially crafted commands to cause the PLC to fault when the controller is switched to RUN mode, which results in a denial-of-service condition. If successfully exploited, this vulnerability will cause the controller to fault whenever the controller is switched to RUN mode.

Scoring

CVSS 8.6 ()
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
EPSS1.95% probability of exploitation · percentile 77.6% · 2026-06-19T12:03:05Z
Last modified2026-06-03

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.