Improper input validation in Rockwellautomation Micrologix_1100
CVE-2021-33012
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 con…
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
EPSS: 0.035 (87.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.
Affected products
- Rockwellautomation Micrologix_1100
- Rockwellautomation Micrologix_1100_firmware
- N/a Rockwell Automation Micrologix 1100 — versions All Versions
Weakness classification (CWE)
Public proof-of-concept exploits
References
- ics-cert@hq.dhs.gov (US Government Resource, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-33012?
- CVE-2021-33012 is a high-severity vulnerability in Rockwellautomation Micrologix_1100, classified under Improper Input Validation. CVSS score: 8.6/10. Published 2021-07-09.
- How severe is CVE-2021-33012?
- High severity. CVSS v3 base score is 8.6 out of 10.
- Is CVE-2021-33012 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.