Auth bypass in Automation Direct Click Plc Cpu Modules: C0-1x Cpus
CVE-2021-32984
All programming connections receive the same unlocked privileges, which can result in a privilege escalation. During the time Automation Direct CLICK PLC CPU Modules: C0-1x CPUs with firmware prior to v3.00 is unlocked by an authorized user, an attacker can connect to the PLC and read the project without authorization.
EPSS: 0.011 (61.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Automation Direct Click Plc Cpu Modules: C0-1x Cpus — versions unspecified
- Automationdirect C0-10are-d
- Automationdirect C0-10are-d_firmware
- Automationdirect C0-10dd1e-d
- Automationdirect C0-10dd1e-d_firmware
- Automationdirect C0-10dd2e-d
- Automationdirect C0-10dd2e-d_firmware
- Automationdirect C0-10dre-d
- Automationdirect C0-10dre-d_firmware
- Automationdirect C0-11are-d
Weakness classification (CWE)
Public proof-of-concept exploits
References
- ics-cert@hq.dhs.gov (x_refsource_CONFIRM, US Government Resource, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-32984?
- CVE-2021-32984 is a critical-severity vulnerability in Automation Direct Click Plc Cpu Modules: C0-1x Cpus, classified under Authentication Bypass Using an Alternate Path or Channel. CVSS score: 9.8/10. Published 2022-04-04.
- How severe is CVE-2021-32984?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2021-32984 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.