File and Directory Information Exposure in Siemens SIMATIC WinCC and SIMATIC PCS 7 - CVE-2021-40363
Published: February 11, 2022
Vulnerability identifier: #VU60533
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-40363
CWE-ID: CWE-538
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to gain access to potentially sensitive information.
The vulnerability exists due to the affected component stores the credentials of a local system account in a potentially publicly accessible project file using an outdated cipher algorithm. A local user can gain unauthorized access to sensitive information on the system.
Affected software
Siemens SIMATIC WinCC
SIMATIC PCS 7
SIMATIC PCS 7
How to mitigate CVE-2021-40363
Install updates from vendor's website.
Siemens SIMATIC WinCC - addressed in versions 7.5 SP2 Update 6, 16 Update 5
SIMATIC PCS 7 - update to 9.1 SP1
SIMATIC PCS 7 - update to 9.1 SP1