VULNERABILITY INTELLIGENCE

CVE-2020-27632

CVSS score7.5 HIGH

EPSS probability2.14%

CISA KEVNot currently listed

Published2021-03-10

Last modified2026-06-17

Description

In SIMATIC MV400 family versions prior to v7.0.6, the ISN generator is initialized with a constant value and has constant increments. An attacker could predict and hijack TCP sessions.