CVE-2019-5636
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5 Medium
CVSS2
Access Vector
Access Complexity
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
0.001 Low
EPSS
Percentile
48.8%
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).
Affected configurations
| CPE | Name | Operator | Version |
|---|---|---|---|
| beckhoff:twincat | beckhoff twincat | eq | 2.0 |
| beckhoff:twincat | beckhoff twincat | eq | 3.1 |
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
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5 Medium
CVSS2
Access Vector
Access Complexity
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
0.001 Low
EPSS
Percentile
48.8%