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01 Record

CVE-2020-28388

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 <

MediumPUBLISHEDCNA: siemens
CNA base score6.5 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L/E:P/RL:O/RC:C
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02 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 <

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
1.35% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 71.1% of scored records. A rank, not a probability.
NVD base score
5.3 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2021-02-09 00:00Z5 YR AGO
Last updated
2026-06-02 20:14Z4 MO AGO
Reserved
2020-11-10
Assigning CNA
siemens
Record state
PUBLISHED
Severity
Medium (CVSS 6.5)
CNA CVSS 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
Weaknesses
  • CWE-342Predictable Exact Value from Previous ValuesBase
Data version
5.2
Document digest
c1f4ae8b48ae73bb29316aa7ac3d3c1d79f6fc000ff01f2a2f2cf154a1eb11d8

05 Affected products

VendorProductVersionsPlatforms
SiemensAPOGEE PXC Compact (BACnet)All versions < V3.5.5—
SiemensAPOGEE PXC Compact (P2 Ethernet)All versions < V2.8.20—
SiemensAPOGEE PXC Modular (BACnet)All versions < V3.5.5—
SiemensAPOGEE PXC Modular (P2 Ethernet)All versions < V2.8.20—
SiemensNucleus NETAll versions < V5.2—
SiemensNucleus ReadyStart V3All versions < V2012.12—
SiemensNucleus Source CodeAll versions—
SiemensPLUSCONTROL 1st GenAll versions—
SiemensTALON TC Compact (BACnet)All versions < V3.5.5—
SiemensTALON TC Modular (BACnet)All versions < V3.5.5—

06 References