CVE-2025-40833

HIGH

Siemens SCALANCE and RUGGEDCOM Devices < V8.3 - Denial of Service via Crafted IPv4 Request

Title source: llm

Description

The affected devices contain a null pointer dereference vulnerability while processing specially crafted IPv4 requests. This could allow an attacker to cause denial of service condition. A manual restart is required to recover the system.

References (1)

Core 1

Core References

https://cert-portal.siemens.com/productcert/html/ssa-392349.html

Scores

CVSS v3 7.5

EPSS 0.0005

EPSS Percentile 16.5%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact partial

Details

CWE

CWE-476

Status published

Products (50)

Siemens/IE/PB LINK HA

Siemens/IE/PB link PN IO

Siemens/RUGGEDCOM RM1224 LTE(4G) EU < V8.3

Siemens/RUGGEDCOM RM1224 LTE(4G) NAM < V8.3

Siemens/SCALANCE M804PB < V8.3

Siemens/SCALANCE M812-1 ADSL-Router < V8.3

Siemens/SCALANCE M816-1 ADSL-Router < V8.3

Siemens/SCALANCE M826-2 SHDSL-Router < V8.3

Siemens/SCALANCE M874-2 < V8.3

Siemens/SCALANCE M874-3 < V8.3

... and 40 more

Published May 12, 2026

Tracked Since May 12, 2026