CVE-2020-27632

Katalog CVE

CVSS 7.5 · High EPSS 2,1%

Kerentanan pada siemens simatic mv420 firmware, siemens simatic mv440 firmware. Skor CVSS 3.1 7.5 (High) menurut NVD.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

10 Maret 2021

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

7.5 (High), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N · uraikan di kalkulator

EPSS (30 hari)

2,1% peluang dieksploitasi; lebih tinggi dari 81,5% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://cert-portal.siemens.com/productcert/pdf/ssa-599268.pdf advisory vendor
• https://www.cisa.gov/news-events/ics-advisories/icsa-21-042-01
• https://www.forescout.com/resources/numberjack-weak-isn-generation-in-embedded-tcpip-stacks/