Information disclosure in Siemens SIMATIC WinCC and SIMATIC PCS 7 - CVE-2021-40360
Published: February 11, 2022
Vulnerability identifier: #VU60534
CSH Severity: Low
CVSS v4: 7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N]
CVE-ID: CVE-2021-40360
CWE-ID: CWE-200
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to excessive data output by the application. A remote authenticated attacker can brute force the password hash and use it to login to the server.
Affected software
Siemens SIMATIC WinCC
SIMATIC PCS 7
SIMATIC PCS 7
How to mitigate CVE-2021-40360
Install updates from vendor's website.
Siemens SIMATIC WinCC - addressed in versions 7.5 SP2 Update 6, 16 Update 5, 17 Update 2
SIMATIC PCS 7 - update to 9.1 SP1
SIMATIC PCS 7 - update to 9.1 SP1