Rapid7CVELIST:CVE-2019-5636CVE-2019-5636 Beckhoff TwinCAT Discovery Service Denial of Service
5.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
0.001 Low
EPSS
Percentile
49.0%
When a Beckhoff TwinCAT Runtime receives a malformed UDP packet, the ADS Discovery Service shuts down. Note that the TwinCAT devices are still performing as normal. This issue affects TwinCAT 2 version 2304 (and prior) and TwinCAT 3.1 version 4204.0 (and prior).
CNA Affected
[
{
"product": "TwinCAT 2",
"vendor": "Beckhoff",
"versions": [
{
"lessThanOrEqual": "2304",
"status": "affected",
"version": "2304",
"versionType": "custom"
}
]
},
{
"product": "TwinCAT 3.1",
"vendor": "Beckhoff",
"versions": [
{
"lessThanOrEqual": "4204.0",
"status": "affected",
"version": "4204.0",
"versionType": "custom"
}
]
}
]Related
5.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
0.001 Low
EPSS
Percentile
49.0%