SiemensCVELIST:CVE-2021-25677CVE-2021-25677
5.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:P/RL:O/RC:C
5.5 Medium
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
42.9%
A vulnerability has been identified in APOGEE PXC Compact (BACnet) (All versions < V3.5.5), APOGEE PXC Compact (P2 Ethernet) (All versions < V2.8.20), APOGEE PXC Modular (BACnet) (All versions < V3.5.5), APOGEE PXC Modular (P2 Ethernet) (All versions < V2.8.20), Nucleus NET (All versions), Nucleus ReadyStart V3 (All versions < V2017.02.3), Nucleus ReadyStart V3 (All versions < V2017.02.4), Nucleus ReadyStart V4 (All versions < V4.1.0), Nucleus Source Code (Versions including affected DNS modules), SIMOTICS CONNECT 400 (All versions < V0.5.0.0), SIMOTICS CONNECT 400 (All versions >= V0.5.0.0 < V1.0.0.0), TALON TC Compact (BACnet) (All versions < V3.5.5), TALON TC Modular (BACnet) (All versions < V3.5.5). The DNS client does not properly randomize DNS transaction IDs. That could allow an attacker to poison the DNS cache or spoof DNS resolving.
CNA Affected
[
{
"vendor": "Siemens",
"product": "APOGEE PXC Compact (BACnet)",
"versions": [
{
"version": "All versions < V3.5.5",
"status": "affected"
}
],
"defaultStatus": "unknown"
},
{
"vendor": "Siemens",
"product": "APOGEE PXC Compact (P2 Ethernet)",
"versions": [
{
"version": "All versions < V2.8.20",
"status": "affected"
}
],
"defaultStatus": "unknown"
},
{
"vendor": "Siemens",
"product": "APOGEE PXC Modular (BACnet)",
"versions": [
{
"version": "All versions < V3.5.5",
"status": "affected"
}
],
"defaultStatus": "unknown"
},
{
"vendor": "Siemens",
"product": "APOGEE PXC Modular (P2 Ethernet)",
"versions": [
{
"version": "All versions < V2.8.20",
"status": "affected"
}
],
"defaultStatus": "unknown"
},
{
"vendor": "Siemens",
"product": "Nucleus NET",
"versions": [
{
"version": "All versions",
"status": "affected"
}
],
"defaultStatus": "unknown"
},
{
"vendor": "Siemens",
"product": "Nucleus ReadyStart V3",
"versions": [
{
"version": "All versions < V2017.02.3",
"status": "affected"
}
],
"defaultStatus": "unknown"
},
{
"vendor": "Siemens",
"product": "Nucleus ReadyStart V3",
"versions": [
{
"version": "All versions < V2017.02.4",
"status": "affected"
}
],
"defaultStatus": "unknown"
},
{
"vendor": "Siemens",
"product": "Nucleus ReadyStart V4",
"versions": [
{
"version": "All versions < V4.1.0",
"status": "affected"
}
],
"defaultStatus": "unknown"
},
{
"vendor": "Siemens",
"product": "Nucleus Source Code",
"versions": [
{
"version": "Versions including affected DNS modules",
"status": "affected"
}
],
"defaultStatus": "unknown"
},
{
"vendor": "Siemens",
"product": "SIMOTICS CONNECT 400",
"versions": [
{
"version": "All versions < V0.5.0.0",
"status": "affected"
}
],
"defaultStatus": "unknown"
},
{
"vendor": "Siemens",
"product": "SIMOTICS CONNECT 400",
"versions": [
{
"version": "All versions >= V0.5.0.0 < V1.0.0.0",
"status": "affected"
}
],
"defaultStatus": "unknown"
},
{
"vendor": "Siemens",
"product": "TALON TC Compact (BACnet)",
"versions": [
{
"version": "All versions < V3.5.5",
"status": "affected"
}
],
"defaultStatus": "unknown"
},
{
"vendor": "Siemens",
"product": "TALON TC Modular (BACnet)",
"versions": [
{
"version": "All versions < V3.5.5",
"status": "affected"
}
],
"defaultStatus": "unknown"
}
]Related
5.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:P/RL:O/RC:C
5.5 Medium
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
42.9%