#VU58236 Path traversal in SIMATIC PCS 7 and Siemens SIMATIC WinCC - CVE-2021-40359
Published: November 18, 2021
Vulnerability identifier: #VU58236
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-40359
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
SIMATIC PCS 7
Siemens SIMATIC WinCC
SIMATIC PCS 7
Siemens SIMATIC WinCC
Software vendor:
Siemens
Siemens
Description
The vulnerability allows a remote attacker to perform directory traversal attacks.
The vulnerability exists due to input validation error when processing directory traversal sequences. A remote authenticated attacker can send a specially crafted HTTP request and read arbitrary files on the system.
Remediation
Install update from vendor's website.