Siemens (CVE-2022-25622)

high Tenable.ot Plugin ID 500641


The remote OT asset is affected by a vulnerability.


A vulnerability has been identified in SIMATIC CFU DIQ (All versions), SIMATIC CFU PA (All versions), SIMATIC S7-1500 CPU family (incl.
related ET200 CPUs and SIPLUS variants) (All versions < V2.0.0), SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions), SIMATIC S7-400 H V6 CPU family (incl. SIPLUS variants) (All versions < V6.0.10), SIMATIC S7-400 PN/DP V7 CPU family (incl. SIPLUS variants) (All versions), SIMATIC S7-410 V10 CPU family (incl. SIPLUS variants) (All versions), SIMATIC S7-410 V8 CPU family (incl. SIPLUS variants) (All versions), SIMATIC TDC CP51M1 (All versions), SIMATIC TDC CPU555 (All versions), SIMATIC WinAC RTX (All versions), SIMIT Simulation Platform (All versions). 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.

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Refer to the vendor advisory.

See Also

Plugin Details

Severity: High

ID: 500641

Version: 1.1

Type: remote

Family: Tenable.ot

Published: 4/28/2022

Updated: 4/28/2022

Risk Information


Risk Factor: Medium

Score: 4.4


Risk Factor: Medium

Base Score: 5

Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS Score Source: CVE-2022-25622


Risk Factor: High

Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Vulnerability Information

CPE: cpe:/o:siemens:simatic_s7-1500_cpu_firmware, cpe:/o:siemens:simatic_s7-300_cpu_firmware, cpe:/o:siemens:simatic_s7-400_pn%2fdp_v7_firmware, cpe:/o:siemens:simatic_s7-400h_v6_firmware

Required KB Items: Tenable.ot/Siemens

Exploit Ease: No known exploits are available

Patch Publication Date: 4/12/2022

Vulnerability Publication Date: 4/12/2022

Reference Information

CVE: CVE-2022-25622

CWE: 400