CVE-2020-28388
Published: Feb 9, 2021
Modified: Jun 2, 2026
CVSS v3.1
6.5
Description
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 < V5.2), Nucleus ReadyStart V3 (All versions < V2012.12), Nucleus Source Code (All versions), PLUSCONTROL 1st Gen (All versions), TALON TC Compact (BACnet) (All versions < V3.5.5), TALON TC Modular (BACnet) (All versions < V3.5.5). Initial Sequence Numbers (ISNs) for TCP connections are derived from an insufficiently random source. As a result, the ISN of current and future TCP connections could be predictable. An attacker could hijack existing sessions or spoof future ones.
| Vendor | Product | Versions |
|---|---|---|
Siemens | APOGEE PXC Compact (BACnet) | affected All versions < V3.5.5 |
Siemens | APOGEE PXC Compact (P2 Ethernet) | affected All versions < V2.8.20 |
Siemens | APOGEE PXC Modular (BACnet) | affected All versions < V3.5.5 |
Siemens | APOGEE PXC Modular (P2 Ethernet) | affected All versions < V2.8.20 |
Siemens | Nucleus NET | affected All versions < V5.2 |
Siemens | Nucleus ReadyStart V3 | affected All versions < V2012.12 |
Siemens | Nucleus Source Code | affected All versions |
Siemens | PLUSCONTROL 1st Gen | affected All versions |
Siemens | TALON TC Compact (BACnet) | affected All versions < V3.5.5 |
Siemens | TALON TC Modular (BACnet) | affected All versions < V3.5.5 |
Weaknesses (CWE)
CVSS v3.1 Details
CVSS v3.1 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L/E:P/RL:O/RC:C
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
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