What is CVE-2026-0393?

CVE-2026-0393 is a medium-severity vulnerability in Codesys Visualization, classified under Insufficiently Protected Credentials. CVSS score: 6.5/10. Published 2026-05-21.

How severe is CVE-2026-0393?

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

Vulnerability in Codesys Visualization

CVE-2026-0393

The affected product may expose credentials remotely between low privileged visualization users during concurrent login operations due to insufficient isolation of authentication data. The vulnerability affects only login operations within…

EPSS: 0.000 (12.4th 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

Codesys Visualization — versions 1.0.0.0

Weakness classification (CWE)

CWE-522 — Insufficiently Protected Credentials

References

info@cert.vde.com (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2026-0393?: CVE-2026-0393 is a medium-severity vulnerability in Codesys Visualization, classified under Insufficiently Protected Credentials. CVSS score: 6.5/10. Published 2026-05-21.
How severe is CVE-2026-0393?: Medium severity. CVSS v3 base score is 6.5 out of 10.