Path Traversal Vulnerability in Siemens SIMATIC Products
CVE-2021-40358

9.9CRITICAL

Key Information:

Vendor

Siemens
Status
Simatic Pcs 7 V8.2
Simatic Pcs 7 V9.0
Simatic Pcs 7 V9.1
Simatic Wincc V15 And Earlier
Vendor
CVE Published:
9 November 2021

What is CVE-2021-40358?

A vulnerability exists in various versions of Siemens SIMATIC PCS 7 and WinCC. The flaw involves improper neutralization of special elements in the pathname during legitimate file operations on the web server. This allows attackers to manipulate the pathname to access files outside the restricted directory, potentially enabling unauthorized reading, writing, or deletion of sensitive files.

Affected Version(s)

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

References

https://cert-portal.siemens.com/productcert/pdf/ssa-84018...

CVSS V3.1

Score:
9.9
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.