CVE-2023-36521

HIGH

SIMATIC MV540 H/S, MV550 H/S, MV560 U/X < 3.3.4 - Denial of Service via Result Synchronization Server

Title source: llm

Description

A vulnerability has been identified in SIMATIC MV540 H (All versions < V3.3.4), SIMATIC MV540 S (All versions < V3.3.4), SIMATIC MV550 H (All versions < V3.3.4), SIMATIC MV550 S (All versions < V3.3.4), SIMATIC MV560 U (All versions < V3.3.4), SIMATIC MV560 X (All versions < V3.3.4). The result synchronization server of the affected products contains a vulnerability that may lead to a denial of service condition. An attacker may cause a denial of service situation of all socket-based communication of the affected products if the result server is enabled.

References (1)

Core 1

Core References

Vendor Advisory

https://cert-portal.siemens.com/productcert/pdf/ssa-561322.pdf

Scores

CVSS v3 8.6

EPSS 0.0029

EPSS Percentile 52.5%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact partial

Details

CWE

CWE-770

Status published

Products (6)

siemens/simatic_mv540_h_firmware < 3.3.4

siemens/simatic_mv540_s_firmware < 3.3.4

siemens/simatic_mv550_h_firmware < 3.3.4

siemens/simatic_mv550_s_firmware < 3.3.4

siemens/simatic_mv560_u_firmware < 3.3.4

siemens/simatic_mv560_x_firmware < 3.3.4

Published Jul 11, 2023

Tracked Since Feb 18, 2026