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CVE-2025-40833

HIGHCVSS 8.7/10EPSS 0.32%

Last modified

CVE-2025-40833 is a high-severity vulnerability rated 8.7/10 on the CVSS scale. 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. EPSS estimates a 0.32% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
7.5/10

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

CVSS 4.0
8.7/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability
0.32%

24.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
SiemensIE/PB LINK HA< V4.1.2
SiemensIE/PB link PN IO< *
SiemensRUGGEDCOM RM1224 LTE(4G) EU< V8.3
SiemensRUGGEDCOM RM1224 LTE(4G) NAM< V8.3
SiemensSCALANCE M804PB< V8.3
SiemensSCALANCE M812-1 ADSL-Router< V8.3
SiemensSCALANCE M816-1 ADSL-Router< V8.3
SiemensSCALANCE M826-2 SHDSL-Router< V8.3
SiemensSCALANCE M874-2< V8.3
SiemensSCALANCE M874-3< V8.3
SiemensSCALANCE M874-3 3G-Router (CN)< V8.3
SiemensSCALANCE M876-3< V8.3
SiemensSCALANCE M876-3 (ROK)< V8.3
SiemensSCALANCE M876-4< V8.3
SiemensSCALANCE M876-4 (EU)< V8.3
SiemensSCALANCE M876-4 (NAM)< V8.3
SiemensSCALANCE MUB852-1 (A1)< V8.3
SiemensSCALANCE MUB852-1 (B1)< V8.3
SiemensSCALANCE MUM853-1 (A1)< V8.3
SiemensSCALANCE MUM853-1 (B1)< V8.3
SiemensSCALANCE MUM853-1 (EU)< V8.3
SiemensSCALANCE MUM856-1 (A1)< V8.3
SiemensSCALANCE MUM856-1 (B1)< V8.3
SiemensSCALANCE MUM856-1 (CN)< V8.3
SiemensSCALANCE MUM856-1 (EU)< V8.3
SiemensSCALANCE MUM856-1 (RoW)< V8.3
SiemensSCALANCE S615 EEC LAN-Router< V8.3
SiemensSCALANCE S615 LAN-Router< V8.3
SiemensSCALANCE SC622-2C< V3.2
SiemensSCALANCE SC626-2C< V3.2
SiemensSCALANCE SC632-2C< V3.2
SiemensSCALANCE SC636-2C< V3.2
SiemensSCALANCE SC642-2C< V3.2
SiemensSCALANCE SC646-2C< V3.2
SiemensSCALANCE W1748-1 M12< *
SiemensSCALANCE W1788-1 M12< *
SiemensSCALANCE W1788-2 EEC M12< *
SiemensSCALANCE W1788-2 M12< *
SiemensSCALANCE W1788-2IA M12< *
SiemensSCALANCE W721-1 RJ45< V6.6.0
SiemensSCALANCE W722-1 RJ45< V6.6.0
SiemensSCALANCE W734-1 RJ45< V6.6.0
SiemensSCALANCE W734-1 RJ45 (USA)< V6.6.0
SiemensSCALANCE W738-1 M12< V6.6.0
SiemensSCALANCE W748-1 M12< V6.6.0
SiemensSCALANCE W748-1 RJ45< V6.6.0
SiemensSCALANCE W761-1 RJ45< V6.6.0
SiemensSCALANCE W774-1 M12 EEC< V6.6.0
SiemensSCALANCE W774-1 RJ45< V6.6.0
SiemensSCALANCE W774-1 RJ45 (USA)< V6.6.0

Showing 50 of 244 affected configurations. See the CNA advisory for the full list.

References

Timeline

Published
Last Modified
Status
Awaiting Analysis

Frequently Asked Questions

What is 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 restart is required to recover the system.
How severe is CVE-2025-40833?
CVE-2025-40833 has a CVSS score of 8.7/10 (HIGH severity). The EPSS model estimates a 0.32% probability of exploitation in the next 30 days.
How do I fix CVE-2025-40833?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST