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CVE-2025-40833

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 r...

Published: May 12, 2026Updated: Jul 14, 2026 Sources: CVE List NVD csafCWE-476
7.5HIGH
NVD MITRE
EPSS Score
0.3%
Top 75.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

Multiple industrial devices contain a vulnerability that could allow an attacker to cause a denial of service condition. Siemens has released new versions for several affected products and recommends to update to the latest versions. Siemens is preparing further fix versions and recommends specific countermeasures for products where fixes are not, or not yet available.

No summary for this CVE yet.

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

Siemens
commercial·DEaka siemens ag
IE/PB LINK HA
ICS / OT / IoT
IE/PB link PN IO
ICS / OT / IoT
RUGGEDCOM RM1224 LTE(4G) EU
ICS / OT / IoT
RUGGEDCOM RM1224 LTE(4G) NAM
ICS / OT / IoT
SCALANCE M804PB
ICS / OT / IoT
SCALANCE M812-1 ADSL-Router
ICS / OT / IoT
SCALANCE M816-1 ADSL-Router
ICS / OT / IoT
SCALANCE M826-2 SHDSL-Router
ICS / OT / IoT
and 236 more affected products View all →

Exploitability

Official Patch Available
Is your org exposed to CVE-2025-40833?We can run the check for you — a free external exposure review, no install. Check my exposure

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

2 techniques
Impact
Initial Access
View detailed technique mapping

References

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

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