Riskcovery

CVE-2020-28388

State
Published
Severity
6.5 Medium
Published
Feb 9, 2021
Updated
Jun 2, 2026
Reserved
Nov 10, 2020

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
3.16.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L/E:P/RL:O/RC:Csiemens

Weaknesses

  • CWE-342 Predictable Exact Value from Previous Values

Affected Products

ProductVersions
APOGEE PXC Compact (BACnet)Siemens
  • All versions < V3.5.5Affected
APOGEE PXC Compact (P2 Ethernet)Siemens
  • All versions < V2.8.20Affected
APOGEE PXC Modular (BACnet)Siemens
  • All versions < V3.5.5Affected
APOGEE PXC Modular (P2 Ethernet)Siemens
  • All versions < V2.8.20Affected
Nucleus NETSiemens
  • All versions < V5.2Affected
Nucleus ReadyStart V3Siemens
  • All versions < V2012.12Affected
Nucleus Source CodeSiemens
  • All versionsAffected
PLUSCONTROL 1st GenSiemens
  • All versionsAffected
TALON TC Compact (BACnet)Siemens
  • All versions < V3.5.5Affected
TALON TC Modular (BACnet)Siemens
  • All versions < V3.5.5Affected

References

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