Review reviewHigh

CVE-2025-40833

Siemens IE/PB LINK HA, IE/PB link PN IO, RUGGEDCOM RM1224 LTE(4G) EU

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: 8.7
EPSS: 0.32%
CISA KEV: Not listed
Published: 2026.05.12

PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability0.32%

Technical severityCVSS 8.7

Vulnerability overview

Affected product and versions

Product: Siemens IE/PB LINK HA, IE/PB link PN IO, RUGGEDCOM RM1224 LTE(4G) EU
Affected versions: < V8.3, < V3.2, < V6.6.0, < V3.2.0, < V2.0.0, < V1.3, < V10.2
Fixed versions: No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that Siemens IE/PB LINK HA, IE/PB link PN IO, RUGGEDCOM RM1224 LTE(4G) EU and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: 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
CWE: CWE-476