CVE-2021-40363 vulnerability in Siemens Products
Published on February 9, 2022
A vulnerability has been identified in SIMATIC PCS 7 V8.2 (All versions), SIMATIC PCS 7 V9.0 (All versions), SIMATIC PCS 7 V9.1 (All versions < V9.1 SP1), SIMATIC WinCC V15 and earlier (All versions < V15 SP1 Update 7), SIMATIC WinCC V16 (All versions < V16 Update 5), SIMATIC WinCC V17 (All versions < V17 Update 2), SIMATIC WinCC V17 (All versions <= V17 Update 4), SIMATIC WinCC V7.4 (All versions < V7.4 SP1 Update 19), SIMATIC WinCC V7.5 (All versions < V7.5 SP2 Update 6). The affected component stores the credentials of a local system account in a potentially publicly accessible project file using an outdated cipher algorithm. An attacker may use this to brute force the credentials and take over the system.
Weakness Type
Insertion of Sensitive Information into Externally-Accessible File or Directory
The product places sensitive information into files or directories that are accessible to actors who are allowed to have access to the files, but not to the sensitive information.
Products Associated with CVE-2021-40363
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Affected Versions
Siemens SIMATIC PCS 7 V8.2:- Version All versions is affected.
- Version All versions is affected.
- Version All versions < V9.1 SP1 is affected.
- Version All versions < V15 SP1 Update 7 is affected.
- Version All versions < V16 Update 5 is affected.
- Version All versions < V17 Update 2 is affected.
- Version All versions <= V17 Update 4 is affected.
- Version All versions < V7.4 SP1 Update 19 is affected.
- Version All versions < V7.5 SP2 Update 6 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.