Improper Authentication in CLICK PLC CPU Module C0-1x CPUs - CVE-2021-32980
Published: June 17, 2021
Vulnerability identifier: #VU54180
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-2021-32980
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 the firmware does not protect against additional software programming connections. A remote attacker can connect to the PLC while an existing connection is already active.
How to mitigate CVE-2021-32980
Install updates from vendor's website.