Cyber Posture

CVE-2025-40833

High

Published: 12 May 2026

Published
12 May 2026
Modified
12 May 2026
KEV Added
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Patch
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CVSS Score 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.0004 12.1th percentile
Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-40833 is a high-severity NULL Pointer Dereference (CWE-476) vulnerability in Siemens (inferred from references). Its CVSS base score is 7.5 (High).

Operationally, ranked at the 12.1th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

NVD 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.

Deeper analysisAI

Automated synthesis unavailable for this CVE.

Details

CWE(s)
CWE-476

Affected Products

Siemens
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inferred from references and description; NVD did not file a CPE for this CVE

References