What is CVE-2025-40583?

CVE-2025-40583 is a medium-severity vulnerability in Siemens Scalance Lpe9403, classified under Cleartext Transmission of Sensitive Information. CVSS score: 4.4/10. Published 2025-05-13.

How severe is CVE-2025-40583?

Medium severity. CVSS v3 base score is 4.4 out of 10.

Vulnerability in Siemens Scalance Lpe9403

CVE-2025-40583

A vulnerability has been identified in SCALANCE LPE9403 (6GK5998-3GS00-2AC2) (All versions < V2.1 HF0 with SINEMA Remote Connect Edge Client installed). Affected devices do transmit sensitive information in cleartext. This could allow a privileged local attacker to retrieve this sensitive information.

Published 2025-05-13 · last modified 2026-09-08.

CVSS v3 metric

CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.001 (1.1th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 1st percentile — 1.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-319 — Cleartext Transmission of Sensitive Information

References

cert-portal.siemens.com/productcert/html/ssa-327438.html (Mitigation, Vendor Advisory)

Frequently asked questions

What is CVE-2025-40583?: CVE-2025-40583 is a medium-severity vulnerability in Siemens Scalance Lpe9403, classified under Cleartext Transmission of Sensitive Information. CVSS score: 4.4/10. Published 2025-05-13.
How severe is CVE-2025-40583?: Medium severity. CVSS v3 base score is 4.4 out of 10.