What is the CVSS score of CVE-2025-40943?

CVE-2025-40943 has a CVSS 3.1 base score of 9.6 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H. EPSS exploitation probability: 0.0%.

How to fix or mitigate CVE-2025-40943?

Within 24 hours: Identify all systems using affected trace file functionality and restrict access to authorized personnel only; issue security alert to end users warning against importing trace files from untrusted sources. Within 7 days: Implement network segmentation to isolate affected systems; disable trace file import functionality if operationally feasible; deploy enhanced monitoring for trace file activities. Within 30 days: Conduct vendor assessment for patch availability; evaluate alternative solutions or workarounds; perform security awareness training focused on social engineering risks related to file imports.

CVE-2025-40943

CRITICAL

Cross-site Scripting (XSS) (CWE-79)

2026-03-10 productcert@siemens.com

XSS

9.6

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.6 CRITICAL

AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:55 vuln.today

CVE Published

Mar 10, 2026 - 18:17 nvd

CRITICAL 9.6

DescriptionCVE.org

Affected devices do not properly sanitize contents of trace files. This could allow an attacker to inject code through social engineering a legitimate user to import a specially crafted trace file