Missing Authentication for Critical Function in Siemens products - CVE-2021-27395

CSH
CYBERSECURITY HELP
Sign In REGISTER
 
Main Vulnerability Database Vulnerabilities #VU57343

Missing Authentication for Critical Function in Siemens products - CVE-2021-27395

Published: October 13, 2021


Vulnerability identifier: #VU57343
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2021-27395
CWE-ID: CWE-306
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: Siemens
Affected software:
SIMATIC Process Historian 2013
SIMATIC Process Historian 2019
SIMATIC Process Historian 2020
SIMATIC Process Historian 2014

Detailed vulnerability description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to the software that is used for critical functionalities lacks authentication. A remote attacker can maliciously insert, modify or delete data.


How to mitigate CVE-2021-27395

Install updates from vendor's website.

Sources