CVE-2021-40358: Path Traversal
A vulnerability has been identified in SIMATIC PCS 7 V8.2 (All versions), SIMATIC PCS 7 V9.0 (All versions < V9.0 SP3 UC04), 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 V7.4 (All versions < V7.4 SP1 Update 19), SIMATIC WinCC V7.5 (All versions < V7.5 SP2 Update 5). Legitimate file operations on the web server of the affected systems do not properly neutralize special elements within the pathname. An attacker could then cause the pathname to resolve to a location outside of the restricted directory on the server and read, write or delete unexpected critical files.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2021-40358?
The severity of CVE-2021-40358 is critical.
Which versions of SIMATIC PCS 7 are affected by CVE-2021-40358?
SIMATIC PCS 7 V8.2, SIMATIC PCS 7 V9.0, and SIMATIC PCS 7 V9.1 are affected by CVE-2021-40358.
Which versions of SIMATIC WinCC are affected by CVE-2021-40358?
SIMATIC WinCC V15 and earlier, SIMATIC WinCC V16, and SIMATIC WinCC V17 are affected by CVE-2021-40358.
How severe is the vulnerability in CVE-2021-40358?
The severity of the vulnerability in CVE-2021-40358 is critical with a CVSS score of 9.9.
Where can I find more information about CVE-2021-40358?
You can find more information about CVE-2021-40358 at the following link: [link](https://cert-portal.siemens.com/productcert/pdf/ssa-840188.pdf).