CVE-2022-27640

MEDIUM

SIMATIC CP 442-1 RNA and CP 443-1 RNA < 1.5.18 - Denial of Service via ARP Storming

Title source: llm
STIX 2.1

Description

A vulnerability has been identified in SIMATIC CP 442-1 RNA (All versions < V1.5.18), SIMATIC CP 443-1 RNA (All versions < V1.5.18). The affected devices improperly handles excessive ARP broadcast requests. This could allow an attacker to create a denial of service condition by performing ARP storming attacks, which can cause the device to reboot.

References (1)

Core 1
Core References
Patch, Vendor Advisory x_refsource_misc
https://cert-portal.siemens.com/productcert/pdf/ssa-480937.pdf

Scores

CVSS v3 6.5
EPSS 0.0010
EPSS Percentile 27.3%
Attack Vector ADJACENT_NETWORK
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-400
Status published
Products (2)
siemens/simatic_cp_442-1_rna_firmware < 1.5.18
siemens/simatic_cp_443-1_rna_firmware < 1.5.18
Published May 20, 2022
Tracked Since Feb 18, 2026