Vulnerability Database

309,084

Total vulnerabilities in the database

CVE-2023-1256

The listed versions of AVEVA Plant SCADA and AVEVA Telemetry Server are vulnerable to an improper authorization exploit which could allow an unauthenticated user to remotely read data, cause denial of service, and tamper with alarm states.

  • Published: Mar 16, 2023
  • Updated: Nov 16, 2025
  • CVE: CVE-2023-1256
  • Severity: Critical
  • Exploit:

CVSS v3:

  • Severity: Critical
  • Score: 9.8
  • AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H