CVE-2022-25622

MEDIUM

SIMATIC CFU DIQ Firmware - Denial of Service via Malformed TCP Segments

Title source: llm
STIX 2.1

Description

The PROFINET (PNIO) stack, when integrated with the Interniche IP stack, improperly handles internal resources for TCP segments where the minimum TCP-Header length is less than defined. This could allow an attacker to create a denial of service condition for TCP services on affected devices by sending specially crafted TCP segments.

References (2)

Core 2

Scores

CVSS v3 5.3
EPSS 0.0014
EPSS Percentile 34.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-400
Status published
Products (12)
siemens/simatic_cfu_diq_firmware
siemens/simatic_cfu_pa_firmware
siemens/simatic_s7-1500_cpu_firmware < 2.0.0
siemens/simatic_s7-300_cpu_firmware
siemens/simatic_s7-400_pn\/dp_v7_firmware
siemens/simatic_s7-400h_v6_firmware
siemens/simatic_s7-410_v10_firmware
siemens/simatic_s7-410_v8_firmware
siemens/simatic_tdc_cp51m1_firmware
siemens/simatic_tdc_cpu555_firmware
... and 2 more
Published Apr 12, 2022
Tracked Since Feb 18, 2026