CVE-2019-18336
7.8 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:N/I:N/A:C
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
7.2 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
42.6%
A vulnerability has been identified in SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions < V3.X.17), SIMATIC TDC CP51M1 (All versions < V1.1.8), SIMATIC TDC CPU555 (All versions < V1.1.1), SINUMERIK 840D sl (All versions < V4.8.6), SINUMERIK 840D sl (All versions < V4.94). Specially crafted packets sent to port 102/tcp (Profinet) could cause the affected device to go into defect mode. A restart is required in order to recover the system. Successful exploitation requires an attacker to have network access to port 102/tcp, with no authentication. No user interation is required. At the time of advisory publication no public exploitation of this security vulnerability was known.
Affected configurations
| CPE | Name | Operator | Version |
|---|---|---|---|
| siemens:simatic_s7-300_cpu_firmware | siemens simatic s7-300 cpu firmware | lt | 3.3.17 |
CNA Affected
[
{
"product": "SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants)",
"vendor": "Siemens AG",
"versions": [
{
"status": "affected",
"version": "All versions < V3.X.17"
}
]
},
{
"product": "SIMATIC TDC CP51M1",
"vendor": "Siemens AG",
"versions": [
{
"status": "affected",
"version": "All versions < V1.1.8"
}
]
},
{
"product": "SIMATIC TDC CPU555",
"vendor": "Siemens AG",
"versions": [
{
"status": "affected",
"version": "All versions < V1.1.1"
}
]
},
{
"product": "SINUMERIK 840D sl",
"vendor": "Siemens AG",
"versions": [
{
"status": "affected",
"version": "All versions < V4.8.6"
}
]
},
{
"product": "SINUMERIK 840D sl",
"vendor": "Siemens AG",
"versions": [
{
"status": "affected",
"version": "All versions < V4.94"
}
]
}
]Related
7.8 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:N/I:N/A:C
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
7.2 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
42.6%