VULNERABILITY INTELLIGENCE

CVE-2021-27395

CVSS score8.1 HIGH
EPSS probability0.80%
CISA KEVNot currently listed
Published2021-10-12
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Description

A vulnerability has been identified in SIMATIC Process Historian 2013 and earlier (All versions), SIMATIC Process Historian 2014 (All versions < SP3 Update 6), SIMATIC Process Historian 2019 (All versions), SIMATIC Process Historian 2020 (All versions). An interface in the software that is used for critical functionalities lacks authentication, which could allow a malicious user to maliciously insert, modify or delete data.

Weakness classification

  • productcert@siemens.com: CWE-306

Primary references