CVE-2021-40363

Description

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component stores the credentials of a local system account in a potentially publicly accessible project file using an outdated cipher algorithm.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.

Categories

7.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.03%
Vendor Advisory siemens.com
Affected: Siemens SIMATIC PCS 7 V8.2
Affected: Siemens SIMATIC PCS 7 V9.0
Affected: Siemens SIMATIC PCS 7 V9.1
Affected: Siemens SIMATIC WinCC V15 and earlier
Affected: Siemens SIMATIC WinCC V16
Affected: Siemens SIMATIC WinCC V17
Affected: Siemens SIMATIC WinCC V17
Affected: Siemens SIMATIC WinCC V7.4
Affected: Siemens SIMATIC WinCC V7.5
Published at:
Updated at:

References

Link Tags
https://cert-portal.siemens.com/productcert/pdf/ssa-914168.pdf patch vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-40363?
CVE-2021-40363 has been scored as a high severity vulnerability.
How to fix CVE-2021-40363?
To fix CVE-2021-40363, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-40363 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-40363 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-40363?
CVE-2021-40363 affects Siemens SIMATIC PCS 7 V8.2, Siemens SIMATIC PCS 7 V9.0, Siemens SIMATIC PCS 7 V9.1, Siemens SIMATIC WinCC V15 and earlier, Siemens SIMATIC WinCC V16, Siemens SIMATIC WinCC V17, Siemens SIMATIC WinCC V17, Siemens SIMATIC WinCC V7.4, Siemens SIMATIC WinCC V7.5.
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