Information management error in Modicon M221 - CVE-2018-7790
Published: August 29, 2018 / Updated: August 29, 2018
Vulnerability identifier: #VU14553
CSH Severity: Low
CVSS v4: 7.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2018-7790
CWE-ID: CWE-199
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to bypass security restrictions on the target system.
The vulnerability exists due to information management error. A remote attacker can connect to a Modicon M221, upload the original program from the PLC and replay authentication sequences.
Affected software
Modicon M221
How to mitigate CVE-2018-7790
Update to version 1.6.2.0.
Modicon M221 - update to 1.6.2.0