CVE-2021-40363: High severity siemens simatic pcs 7 telecontrol firmware vulnerability
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component stores the credentials of a local system account in a potentially publicly accessible project file using an outdated cipher algorithm.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.
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Frequently Asked Questions
What is the severity of CVE-2021-40363?
CVE-2021-40363 has been classified with a medium severity rating.
How do I fix CVE-2021-40363?
To mitigate CVE-2021-40363, update your Siemens SIMATIC PCS 7 or WinCC software to the recommended versions as specified by Siemens.
What software is affected by CVE-2021-40363?
CVE-2021-40363 affects multiple versions of Siemens SIMATIC PCS 7, SIMATIC WinCC, including V8.2 and V9.1 for PCS 7 and various versions of WinCC.
What could happen if I don't address CVE-2021-40363?
Failing to address CVE-2021-40363 could expose your system to potential unauthorized access or manipulation.
Is there a workaround for CVE-2021-40363?
A workaround for CVE-2021-40363 may include restricting access to affected systems, though updating to the latest software is always recommended.