Improper Authentication in CLICK PLC CPU Module C0-1x CPUs - CVE-2021-32984
Published: June 17, 2021
Vulnerability identifier: #VU54183
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2021-32984
CWE-ID: CWE-287
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: AutomationDirect
Affected software:
CLICK PLC CPU Module C0-1x CPUs
CLICK PLC CPU Module C0-1x CPUs
Detailed vulnerability description
The vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to all programming connections receive the same unlocked privileges. A remote attacker can connect to the PLC and read the project without authorization, during the time the PLC is unlocked by an authorized user.
How to mitigate CVE-2021-32984
Install updates from vendor's website.