CVE-2021-40363
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.3 High
AI Score
Confidence
High
2.1 Low
CVSS2
Access Vector
Access Complexity
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:L/AC:L/Au:N/C:P/I:N/A:N
0.0004 Low
EPSS
Percentile
12.5%
A vulnerability has been identified in SIMATIC PCS 7 V8.2 (All versions), SIMATIC PCS 7 V9.0 (All versions), SIMATIC PCS 7 V9.1 (All versions < V9.1 SP1), SIMATIC WinCC V15 and earlier (All versions < V15 SP1 Update 7), SIMATIC WinCC V16 (All versions < V16 Update 5), SIMATIC WinCC V17 (All versions < V17 Update 2), SIMATIC WinCC V17 (All versions <= V17 Update 4), SIMATIC WinCC V7.4 (All versions < V7.4 SP1 Update 19), SIMATIC WinCC V7.5 (All versions < V7.5 SP2 Update 6). The affected component stores the credentials of a local system account in a potentially publicly accessible project file using an outdated cipher algorithm. An attacker may use this to brute force the credentials and take over the system.
Affected configurations
CNA Affected
[
{
"product": "SIMATIC PCS 7 V8.2",
"vendor": "Siemens",
"versions": [
{
"status": "affected",
"version": "All versions"
}
]
},
{
"product": "SIMATIC PCS 7 V9.0",
"vendor": "Siemens",
"versions": [
{
"status": "affected",
"version": "All versions"
}
]
},
{
"product": "SIMATIC PCS 7 V9.1",
"vendor": "Siemens",
"versions": [
{
"status": "affected",
"version": "All versions < V9.1 SP1"
}
]
},
{
"product": "SIMATIC WinCC V15 and earlier",
"vendor": "Siemens",
"versions": [
{
"status": "affected",
"version": "All versions < V15 SP1 Update 7"
}
]
},
{
"product": "SIMATIC WinCC V16",
"vendor": "Siemens",
"versions": [
{
"status": "affected",
"version": "All versions < V16 Update 5"
}
]
},
{
"product": "SIMATIC WinCC V17",
"vendor": "Siemens",
"versions": [
{
"status": "affected",
"version": "All versions < V17 Update 2"
}
]
},
{
"product": "SIMATIC WinCC V17",
"vendor": "Siemens",
"versions": [
{
"status": "affected",
"version": "All versions <= V17 Update 4"
}
]
},
{
"product": "SIMATIC WinCC V7.4",
"vendor": "Siemens",
"versions": [
{
"status": "affected",
"version": "All versions < V7.4 SP1 Update 19"
}
]
},
{
"product": "SIMATIC WinCC V7.5",
"vendor": "Siemens",
"versions": [
{
"status": "affected",
"version": "All versions < V7.5 SP2 Update 6"
}
]
}
]Related
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.3 High
AI Score
Confidence
High
2.1 Low
CVSS2
Access Vector
Access Complexity
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:L/AC:L/Au:N/C:P/I:N/A:N
0.0004 Low
EPSS
Percentile
12.5%