What is CVE-2025-39205?

CVE-2025-39205 is a medium-severity vulnerability in Hitachi Energy Microscada X Sys600, classified under Improper Certificate Validation. CVSS score: 6.5/10. Published 2025-06-24.

How severe is CVE-2025-39205?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Is CVE-2025-39205 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Hitachi Energy Microscada X Sys600

CVE-2025-39205

A vulnerability exists in the IEC 61850 in MicroSCADA X SYS600 product. The certificate validation of the TLS protocol allows remote Man-in-the-Middle attack due to missing proper validation.

Vulnerability class: Improper Certificate Validation

EPSS: 0.002 (7.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

Affected products

Hitachi Energy Microscada X Sys600 — versions 10.3
Hitachienergy Microscada_x_sys600

Weakness classification (CWE)

CWE-295 — Improper Certificate Validation

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

cybersecurity@hitachienergy.com (Vendor Advisory)

Frequently asked questions

What is CVE-2025-39205?: CVE-2025-39205 is a medium-severity vulnerability in Hitachi Energy Microscada X Sys600, classified under Improper Certificate Validation. CVSS score: 6.5/10. Published 2025-06-24.
How severe is CVE-2025-39205?: Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2025-39205 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.