CVE-2020-28388 - CVE House
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Status published Medium CVE-2020-28388

A vulnerability has been identified in APOGEE PXC Compact (BACnet)...

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Affected Vendor

Affected Software

APOGEE PXC Compact (BACnet), APOGEE PXC Compact (P2 Ethernet), APOGEE PXC Modular (BACnet), APOGEE PXC Modular (P2 Ethernet), Nucleus NET, Nucleus ReadyStart V3, Nucleus Source Code, PLUSCONTROL 1st Gen, TALON TC Compact (BACnet), TALON TC Modular (BACnet)
Vulnerable Versions:
All versions < V3.5.5, All versions < V2.8.20, All versions < V5.2, All versions < V2012.12, All versions

Timeline

Official Publish: February 9th, 2021
Last Modified: June 2nd, 2026
Added to House: July 21st, 2026

CVSS Vectors

V3: 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

Weaknesses (CWE)

CWE-342

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.