CVE-2020-27632

HighCVSS 7.5/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected software

No affected versions have been published.

Timeline

Published
Mar 10, 2021
Last modified
Jun 17, 2026
NVD status
Modified

Related CVEs from 2020

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