description: A CWE-640: Weak Password Recovery Mechanism for Forgotten Password vulnerability exists that could cause unauthorized access in read and write mode to the controller when communicating over Modbus. Affected Products: EcoStruxure Control Expert Including all Unity Pro versions (former name of EcoStruxure Control Expert) (V15.0 SP1 and prior), EcoStruxure Process Expert, Including all versions of EcoStruxure Hybrid DCS (former name of EcoStruxure Process Expert) (V2021 and prior), Modicon M340 CPU (part numbers BMXP34*) (V3.40 and prior), Modicon M580 CPU (part numbers BMEP* and BMEH*) (V3.20 and prior).
problem types: CWE-640 Weak Password Recovery Mechanism for Forgotten Password
affected:
{
product: EcoStruxure Control Expert
vendor: Schneider Electric
versions:
lessThanOrEqual: 15.0, status: affected, version: SP1, versionType: custom
}
{
product: EcoStruxure Process Expert
vendor: Schneider Electric
versions:
lessThanOrEqual: 2021, status: affected, version: V, versionType: custom
}
{
product: Modicon M340 CPU
vendor: Schneider Electric
versions:
lessThanOrEqual: 3.40, status: affected, version: BMXP34, versionType: custom
}
{
product: Modicon M580 CPU
vendor: Schneider Electric
versions:
lessThanOrEqual: 3.20, status: affected, version: BMEP, versionType: custom
lessThanOrEqual: 3.20, status: affected, version: BMEH, versionType: custom
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: HIGH
baseScore: 9.8
baseSeverity: CRITICAL
confidentialityImpact: HIGH
integrityImpact: HIGH
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
version: 3.1
]