Connect your agent
AdvisoriesCriticalCheck your lockfilePluginHow it worksPricing Connect your agent

CVE record · CVE-2020-27737

Out-of-bounds read in Siemens APOGEE PXC Compact (BACnet) and others

CVSS 6.5 MediumEPSS 0.036 · 89th percentile

Published by the CVE Program (CNA: siemens) at 22 Apr 2021, 20:42 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
VendorProductVersions
Siemens APOGEE PXC Compact (BACnet)
  • affected All versions < V3.5.5
Other versions: unknown
Siemens APOGEE PXC Compact (P2 Ethernet)
  • affected All versions < V2.8.20
Other versions: unknown
Siemens APOGEE PXC Modular (BACnet)
  • affected All versions < V3.5.5
Other versions: unknown
Siemens APOGEE PXC Modular (P2 Ethernet)
  • affected All versions < V2.8.20
Other versions: unknown
Siemens Nucleus NET
  • affected All versions
Other versions: unknown
Siemens Nucleus ReadyStart V3
  • affected All versions < V2017.02.3
Other versions: unknown
Siemens Nucleus ReadyStart V4
  • affected All versions < V4.1.0
Other versions: unknown
Siemens Nucleus Source Code
  • affected Versions including affected DNS modules
Other versions: unknown
Siemens SIMOTICS CONNECT 400
  • affected All versions < V0.5.0.0
Other versions: unknown
Siemens TALON TC Compact (BACnet)
  • affected All versions < V3.5.5
Other versions: unknown
Siemens TALON TC Modular (BACnet)
  • affected All versions < V3.5.5
Other versions: unknown
Identifiers
CVE-2020-27737
CNA
siemens
Weakness (CWE)
CWE-125
Tags
Published
22 Apr 2021
Updated
4 Aug 2024

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

ScoreRatingCVSSVectorSource
6.5 Medium 3.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:H/E:P/RL:O/RC:C CNA (siemens)
  • CISA KEV Not listed.
  • EPSS 0.036, the 89th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 22 Apr 2021. New records show when each source confirmed them.

Sources

References from the CNA

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.