Medium severity · published Feb 9, 2021
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)…
5.3
CVSS
1.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.4% · higher than 71% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CV
Capital Vstar · Siemens
All versions, or not specified · source: NVD
NN
Nucleus Net · Siemens
before 5.2 · source: NVD
NR
Nucleus Readystart · Siemens
before 2012.12 · source: NVD
NS
Nucleus Source Code · Siemens
All versions, or not specified · source: NVD
P1
Pluscontrol 1st Gen · Siemens
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-28388
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-28388
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/pdf/ssa-180579.pdf
Vendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-344238.pdf
Vendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-362164.pdf
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/pdf/ssa-436469.pdf
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