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CVE-2025-40833

Published: May 12, 2026Updated: May 12, 2026 Sources: CVE List NVD csafCWE-476
NVD MITRE
7.5CVSSHIGH
EPSS Score
0.3%
Top 76.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-476

Affected Products

IE/PB LINK HASiemens
On-prem
Enterprise Software / collaboration-groupware
IE/PB link PN IOSiemens
On-prem
Enterprise Software / collaboration-groupware
RUGGEDCOM RM1224 LTE(4G) EUSiemens
On-premNetwork Device
Networking Infrastructure / router-switch
RUGGEDCOM RM1224 LTE(4G) NAMSiemens
On-premNetwork Device
Networking Infrastructure / router-switch
SCALANCE M804PBSiemens
On-premNetwork Device
ICS / OT / IoT / industrial-network
siemenscommercialDEEnterprise Softwareaka siemens ag
and 239 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Impact
Initial Access
View detailed technique mapping

References

https://cert-portal.siemens.com/productcert/html/ssa-392349.html
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/csaf/ssa-392349.json
cert-portal.siemens.com
https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2026/icsa-26-134-06.json
raw.githubusercontent.com
and 10 more references View all →

Timeline

Published
May 12, 2026
Last Updated
May 12, 2026

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