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

Vendor	Product	Versions
n/a	n/a	n/a

References

Timeline

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

Related CVEs from 2020

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