CVE-2020-25242
HIGHSIMATIC NET CP 343-1 Advanced, Lean, and Standard - Denial of Service via Crafted TCP Port 102 Packets
Title source: llmDescription
A vulnerability has been identified in SIMATIC NET CP 343-1 Advanced (incl. SIPLUS variants) (All versions), SIMATIC NET CP 343-1 Lean (incl. SIPLUS variants) (All versions), SIMATIC NET CP 343-1 Standard (incl. SIPLUS variants) (All versions). Specially crafted packets sent to TCP port 102 could cause a Denial-of-Service condition on the affected devices. A cold restart might be necessary in order to recover.
References (2)
Core 2
Core References
Vendor Advisory x_refsource_confirm
https://cert-portal.siemens.com/productcert/pdf/ssa-676775.pdf
Third Party Advisory, US Government Resource x_refsource_misc
https://us-cert.cisa.gov/ics/advisories/icsa-21-131-07
Scores
CVSS v3
7.5
EPSS
0.0016
EPSS Percentile
36.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-400
Status
published
Products (3)
siemens/simatic_net_cp_343-1_advanced_firmware
siemens/simatic_net_cp_343-1_lean_firmware
siemens/simatic_net_cp_343-1_standard_firmware
Published
May 12, 2021
Tracked Since
Feb 18, 2026