title: CVE-2023-1256
description: 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.
problem types: CWE-285 Improper Authorization
affected:
{
vendor: AVEVA
product: AVEVA Plant SCADA
versions:
status: affected, version: 2023 Update 10
}
{
vendor: AVEVA
product: AVEVA Plant SCADA
versions:
status: affected, version: 2020R2 Update 10
}
{
vendor: AVEVA
product: AVEVA Telemetry Server
versions:
status: affected, version: 2020 R2 SP1
}
metrics:
format: CVSS
scenarios: GENERAL
cvssV3_1: [
version: 3.1
attackVector: NETWORK
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: HIGH
integrityImpact: HIGH
availabilityImpact: HIGH
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
baseScore: 9.8
baseSeverity: CRITICAL
]