ClosedCriticalPatched

Unitronics Vision PLC and HMI: Insecure Default Password (CVE-2023-6448)

Unitronics Vision PLC and HMI

Unitronics Vision Series PLCs and HMIs ship with an insecure default password, which if left unchanged, can allow attackers to execute remote commands. Added to CISA KEV on 2023-12-11.

Why this severity: CVSS 9.8 (NVD), actively exploited (CISA KEV)

Started: Dec 11, 2023
Closed: Dec 11, 2023
CVE: CVE-2023-6448

Follow this incident

Updated Dec 11, 2023

Affected

See vendor advisory / CISA notes (versions not always listed in KEV feed)

Fixed in

See vendor advisory linked in sources

Timeline1

Dec 11, 2023
CISA added CVE-2023-6448 to the KEV catalog (due 2023-12-18).

Advisories2

Notes & caveats

Derived from CISA KEV JSON feed catalogVersion 2026.10.21. Exact affected/fixed version strings are not always in the KEV record — verify against the vendor advisory URL. startedAt uses dateAdded (exploitation may have begun earlier).

Get an email when a new major security incident drops. No spam, unsubscribe any time.

Get notified