title: CODESYS runtime system prone to denial of service due to buffer over read
description: Multiple CODESYS Products are prone to a buffer over read. A low privileged remote attacker may craft a request with an invalid offset, which can cause an internal buffer over-read, resulting in a denial-of-service condition. User interaction is not required.
problem types: CWE-126 Buffer Over-read
affected:
{
platforms: 32 bit
product: Runtime Toolkit
vendor: CODESYS
versions:
lessThan: V2.4.7.57, status: affected, version: V2, versionType: custom
}
{
product: PLCWinNT
vendor: CODESYS
versions:
lessThan: V2.4.7.57, status: affected, version: V2, versionType: custom
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: HIGH
baseScore: 6.5
baseSeverity: MEDIUM
confidentialityImpact: NONE
integrityImpact: NONE
privilegesRequired: LOW
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
version: 3.1
]