CVE-2020-28388

mediumPriorität · verfolgen · 21OT-Risiko · erhöhtStack-Kampagne · NUMBER:JACKEPSS 0.013 · 71. PerzentilDEEURUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
1.35% (71st) EPSS
CVSS 5 · medium
Is it mine?
48 products
Prüfe deine Angriffsfläche
Who says so?
6 sources
cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · bewertet 2026-10-27

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.

01

Behebungen

Hersteller-Fix, Mitigation oder Workaround, wie von den Quellen veröffentlicht.

Ein Hersteller-Fix ist verfügbar.

  • BehobenAPOGEE PXC Compact (BACnet)siemens_psirt

    Update to V3.5.5 or later version

    https://partnerportal.extranet.dc.siemens.com/
  • BehobenAPOGEE PXC Compact (P2 Ethernet)siemens_psirt

    Update to V2.8.20 or later version

    https://partnerportal.extranet.dc.siemens.com/
  • BehobenAPOGEE PXC Modular (BACnet)siemens_psirt

    Update to V3.5.5 or later version

    https://partnerportal.extranet.dc.siemens.com/
  • BehobenAPOGEE PXC Modular (P2 Ethernet)siemens_psirt

    Update to V2.8.20 or later version

    https://partnerportal.extranet.dc.siemens.com/
  • BehobenTALON TC Compact (BACnet)siemens_psirt

    Update to V3.5.5 or later version

    https://partnerportal.extranet.dc.siemens.com/
  • BehobenTALON TC Modular (BACnet)siemens_psirt

    Update to V3.5.5 or later version

    https://partnerportal.extranet.dc.siemens.com/
  • BehobenNucleus ReadyStart V3siemens_psirt

    Update to V2012.12 or later version

    https://support.sw.siemens.com/en-US/product/1009925838/
  • BehobenNucleus Source Codesiemens_psirt

    Contact customer support to receive patch and update information

  • BehobenAPOGEE PXC Series (BACnet)siemens_psirt

    Update to V3.5.5 or later version

    https://partnerportal.extranet.dc.siemens.com/
  • BehobenAPOGEE PXC Series (P2 Ethernet)siemens_psirt

    Update to V2.8.20 or later version

    https://partnerportal.extranet.dc.siemens.com/
  • BehobenTALON TC Series (BACnet)siemens_psirt

    Update to V3.5.5 or later version

    https://partnerportal.extranet.dc.siemens.com/
  • BehobenCapital VSTARcisa_csaf_ot

    uIP-Contiki-NG has a patch in progress. See general recommendations below until a patch is made available.

  • BehobenCycloneTCPcisa_csaf_ot

    uIP-Contiki-NG has a patch in progress. See general recommendations below until a patch is made available.

  • BehobenFNETcisa_csaf_ot

    uIP-Contiki-NG has a patch in progress. See general recommendations below until a patch is made available.

  • BehobenMPLAB Netcisa_csaf_ot

    uIP-Contiki-NG has a patch in progress. See general recommendations below until a patch is made available.

  • BehobenNDKTCPIPcisa_csaf_ot

    uIP-Contiki-NG has a patch in progress. See general recommendations below until a patch is made available.

  • BehobenNucleus NET Allcisa_csaf_ot

    uIP-Contiki-NG has a patch in progress. See general recommendations below until a patch is made available.

  • BehobenNucleus ReadyStart for ARM MIPS and PPCcisa_csaf_ot

    uIP-Contiki-NG has a patch in progress. See general recommendations below until a patch is made available.

  • BehobenNucleus Source Codecisa_csaf_ot

    uIP-Contiki-NG has a patch in progress. See general recommendations below until a patch is made available.

  • BehobenNut/Netcisa_csaf_ot

    uIP-Contiki-NG has a patch in progress. See general recommendations below until a patch is made available.

  • BehobenpicoTCP (EOL)cisa_csaf_ot

    uIP-Contiki-NG has a patch in progress. See general recommendations below until a patch is made available.

  • BehobenpicoTCP-NGcisa_csaf_ot

    uIP-Contiki-NG has a patch in progress. See general recommendations below until a patch is made available.

  • BehobenuC/TCP-IP (EOL)cisa_csaf_ot

    uIP-Contiki-NG has a patch in progress. See general recommendations below until a patch is made available.

  • BehobenuIP (EOL)cisa_csaf_ot

    uIP-Contiki-NG has a patch in progress. See general recommendations below until a patch is made available.

  • BehobenuIP-Contiki-NGcisa_csaf_ot

    uIP-Contiki-NG has a patch in progress. See general recommendations below until a patch is made available.

  • BehobenuIP-Contiki-OS (end-of-life [EOL])cisa_csaf_ot

    uIP-Contiki-NG has a patch in progress. See general recommendations below until a patch is made available.

  • BehobenAPOGEE PXC Compact (BACnet)cisa_csaf_ot

    Update to V3.5.5 or later version

    https://partnerportal.extranet.dc.siemens.com/
  • BehobenAPOGEE PXC Compact (P2 Ethernet)cisa_csaf_ot

    Update to V2.8.20 or later version

    https://partnerportal.extranet.dc.siemens.com/
  • BehobenAPOGEE PXC Modular (BACnet)cisa_csaf_ot

    Update to V3.5.5 or later version

    https://partnerportal.extranet.dc.siemens.com/
  • BehobenAPOGEE PXC Modular (P2 Ethernet)cisa_csaf_ot

    Update to V2.8.20 or later version

    https://partnerportal.extranet.dc.siemens.com/
  • BehobenTALON TC Compact (BACnet)cisa_csaf_ot

    Update to V3.5.5 or later version

    https://partnerportal.extranet.dc.siemens.com/
  • BehobenTALON TC Modular (BACnet)cisa_csaf_ot

    Update to V3.5.5 or later version

    https://partnerportal.extranet.dc.siemens.com/
  • MitigationNucleus NETsiemens_psirt

    Contact customer support or your local Nucleus Sales team for mitigation advice

  • MitigationNucleus ReadyStart V3siemens_psirt

    Protect transmitted data with cryptographic protocols such as Transport Layer Security

  • MitigationNucleus Source Codesiemens_psirt

    Protect transmitted data with cryptographic protocols such as Transport Layer Security

  • MitigationCapital VSTARcisa_csaf_ot

    Nut/Net has a patch in progress. See general recommendations below until a patch is made available.

  • MitigationCycloneTCPcisa_csaf_ot

    Nut/Net has a patch in progress. See general recommendations below until a patch is made available.

  • MitigationFNETcisa_csaf_ot

    Nut/Net has a patch in progress. See general recommendations below until a patch is made available.

  • MitigationMPLAB Netcisa_csaf_ot

    Nut/Net has a patch in progress. See general recommendations below until a patch is made available.

  • MitigationNDKTCPIPcisa_csaf_ot

    Nut/Net has a patch in progress. See general recommendations below until a patch is made available.

  • MitigationNucleus NET Allcisa_csaf_ot

    Nut/Net has a patch in progress. See general recommendations below until a patch is made available.

  • MitigationNucleus ReadyStart for ARM MIPS and PPCcisa_csaf_ot

    Nut/Net has a patch in progress. See general recommendations below until a patch is made available.

  • MitigationNucleus Source Codecisa_csaf_ot

    Nut/Net has a patch in progress. See general recommendations below until a patch is made available.

  • MitigationNut/Netcisa_csaf_ot

    Nut/Net has a patch in progress. See general recommendations below until a patch is made available.

  • MitigationpicoTCP (EOL)cisa_csaf_ot

    Nut/Net has a patch in progress. See general recommendations below until a patch is made available.

  • MitigationpicoTCP-NGcisa_csaf_ot

    Nut/Net has a patch in progress. See general recommendations below until a patch is made available.

  • MitigationuC/TCP-IP (EOL)cisa_csaf_ot

    Nut/Net has a patch in progress. See general recommendations below until a patch is made available.

  • MitigationuIP (EOL)cisa_csaf_ot

    Nut/Net has a patch in progress. See general recommendations below until a patch is made available.

  • MitigationuIP-Contiki-NGcisa_csaf_ot

    Nut/Net has a patch in progress. See general recommendations below until a patch is made available.

  • MitigationuIP-Contiki-OS (end-of-life [EOL])cisa_csaf_ot

    Nut/Net has a patch in progress. See general recommendations below until a patch is made available.

  • MitigationPLUSCONTROL 1st Gencisa_csaf_ot

    PLUSCONTROL devices are typically located in a separate LAN segment of energy transmission solutions, where an attacker could use this vulnerability to disrupt SER messages or Trace functionalities. Therefore, review the status of the defense in depth recommendations that apply to your specific deployment and align as needed. Especially the measures on the network layer to prevent accessibility from other network segments.

  • Kein Fix geplantNucleus NETsiemens_psirt

    Currently no fix is planned

02

cvss

Technischer Schweregrad, 0–10. Eine Zeile je Quelle.

6.5
010

Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen

v2.05mediumAV:N/AC:L/Au:N/C:N/I:P/A:Nprimary · NVD / NIST USAusnutzbarkeit 10 · Auswirkung 2.9
v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:Nprimary · NVD / NIST USAusnutzbarkeit 3.9 · Auswirkung 1.4
v3.06.5mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:Lsecondary · CISA US
v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L/E:P/RL:O/RC:Csecondary · CISA US
v3.15.3mediumAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:Nsecondary · FSTEC (BDU) RU
v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L/E:P/RL:O/RC:Csecondary · ENISA EU
v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:Lsecondary · productcert@siemens.com DEAusnutzbarkeit 3.9 · Auswirkung 2.5
v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L/E:P/RL:O/RC:Csecondary · Siemens ProductCERT DE
v3.14.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)
03

SSVC

Eine Handlungsentscheidung — aus Ausnutzung und Auswirkung.

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS
04

schwächen

Die CWE-Schwächeklassen, zu denen dies gehört.

CWE-330USCWE-342USCWE-342USCWE-342USCWE-342US
05

betroffene Produkte (48)

Betroffene Produkte und Versionsbereiche.

20 von 48 angezeigt
06

Advisories (7)

Hersteller- und Ökosystem-Meldungen dazu.

  • SSA-180579SSA-180579: Privilege Management Vulnerability and Multiple Nucleus RTOS Vulnerabilities in APOGEE/TALON Field Panels before V3.5.5/V2.8.202022-12-13csaf · siemens_psirtDE

    APOGEE PXC / TALON TC field panels (BACnet before V3.5.5 and P2 Ethernet before V2.8.20) contain multiple vulnerabilities: - CVE-2022-45937: A privilege management vulnerability that could allow low privilege authenticated attackers to gain high privilege access. - CVE-2020-28388: Predictable Initial Sequence Numbers in the TCP/IP Stack of Nucleus RTOS (real-time operating system) used by the affected products. - Several vulnerabilities in the DNS (domain name service) implementation of Nucleus RTOS. Siemens has released updates for the affected products and recommends to update to the latest versions.

  • SSA-362164SSA-362164: Predictable Initial Sequence Numbers in the TCP/IP Stack of Nucleus RTOS2021-02-09csaf · siemens_psirtDE

    The networking component (Nucleus NET) in Nucleus Real-Time Operating System (RTOS) use Initial Sequence Numbers for TCP-Sessions that are predictable. Siemens has released updates for several affected products and recommends to update to the latest versions. Siemens recommends specific countermeasures for products where updates are not available.

  • SSA-436469SSA-436469: TCP Vulnerability in APOGEE/TALON Field Panels2022-12-13csaf · siemens_psirtDE

    A TCP sequence vulnerability in the APOGEE PXC and TALON TC series of products could allow an attacker to execute a denial of service attack by sending specially crafted packets to the device. Siemens has released updates for the affected products and recommends to update to the latest versions.

  • WID-SEC-W-2023-1987TCP/IP Stack: Mehrere SchwachstellenDeutsch2021-02-11csaf · cert_bundDE

    Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in TCP/IP Stack ausnutzen, um beliebigen Programmcode auszuführen, einen Denial-of-Service-Zustand herbeiführen oder Sicherheitsvorkehrungen umgehen.

  • ICSA-21-042-01Multiple Embedded TCP/IP Stacks (Update B)2021-02-11icsa · cisa_csaf_otUS

    Successful exploitation of weak initial sequence numbers (ISN) can be used to hijack or spoof TCP connections, cause denial-of-service conditions, inject malicious data, or bypass authentication.

  • ICSA-21-068-08Siemens Energy PLUSCONTROL 1st Gen2021-03-09icsa · cisa_csaf_otUS

    Operators of critical power systems (e.g.'TSOs or DSOs) worldwide are usually required by regulations to build resilience into the power grids by applying multi-level redundant secondary protection schemes. It is therefore recommended that the operators check whether appropriate resilient protection measures are in place. The risk of cyber incidents impacting the grid's reliability can thus be minimized by virtue of the grid design. Siemens strongly recommends applying the provided security updates using the corresponding tooling and documented procedures made available with the product. If supported by the product, an automated means to apply the security updates across multiple product instances may be used. Siemens strongly recommends prior validation of any security update before being applied, and supervision by trained staff of the update process in the target environment. As a general security measure Siemens strongly recommends to protect network access with appropriate mechanisms (e.g.'firewalls, segmentation, VPN). It is advised to configure the environment according to our operational guidelines in order to run the devices in a protected IT environment.

  • ICSA-22-349-16Siemens APOGEE and TALON2022-12-13icsa · cisa_csaf_otUS

    APOGEE PXC / TALON TC field panels (BACnet before V3.5.5 and P2 Ethernet before V2.8.20) contain multiple vulnerabilities: - CVE-2022-45937: A privilege management vulnerability that could allow low privilege authenticated attackers to gain high privilege access. - CVE-2020-28388: Predictable Initial Sequence Numbers in the TCP/IP Stack of Nucleus RTOS (real-time operating system) used by the affected products. - Several vulnerabilities in the DNS (domain name service) implementation of Nucleus RTOS. Siemens has released updates for the affected products and recommends to update to the latest versions.

07

auch bekannt als (8)

Weitere Namen und Kennungen dieser Entität.

08

quellen

Welche Quellen diesen Datensatz belegen und wann.

cnnvdenisa_euvdfstec_bducert_bundcisa_csaf_otsiemens_psirtNVDCVE.orgMITRE
veröffentlicht 2021-02-09geändert 2026-06-17
09

Referenzen (16)

Externe Belege — Patches, Meldungen, Analysen.

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