CVE-2025-40944

highPriorität · verfolgen · 0EPSS 0.004 · 37. PerzentilDEEUNLUS
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
0.44% (37th) EPSS
CVSS 7.5 · high
Is it mine?
189 products
Prüfe deine Angriffsfläche
Who says so?
5 sources
cnnvd · enisa_euvd · cisa_csaf_ot · ncsc_nl

EPSS · bewertet 2026-10-22

A vulnerability has been identified in SIMATIC ET 200AL IM 157-1 PN (6ES7157-1AB00-0AB0) (All versions), SIMATIC ET 200MP IM 155-5 PN HF (6ES7155-5AA00-0AC0) (All versions >= V4.2.0), SIMATIC ET 200SP IM 155-6 MF HF (6ES7155-6MU00-0CN0) (All versions), SIMATIC ET 200SP IM 155-6 PN HA (incl. SIPLUS variants) (All versions < V1.3), SIMATIC ET 200SP IM 155-6 PN R1 (6ES7155-6AU00-0HM0) (All versions < V6.0.1), SIMATIC ET 200SP IM 155-6 PN/2 HF (6ES7155-6AU01-0CN0) (All versions >= V4.2.0 < V4.2.5), SIMATIC ET 200SP IM 155-6 PN/3 HF (6ES7155-6AU30-0CN0) (All versions < V4.2.2), SIMATIC PN/MF Coupler (6ES7158-3MU10-0XA0) (All versions), SIMATIC PN/PN Coupler (6ES7158-3AD10-0XA0) (All versions < V6.0.0), SIPLUS ET 200MP IM 155-5 PN HF (6AG1155-5AA00-2AC0) (All versions >= V4.2.0), SIPLUS ET 200MP IM 155-5 PN HF (6AG1155-5AA00-7AC0) (All versions >= V4.2.0), SIPLUS ET 200MP IM 155-5 PN HF T1 RAIL (6AG2155-5AA00-1AC0) (All versions >= V4.2.0), SIPLUS ET 200SP IM 155-6 PN HF (6AG1155-6AU01-2CN0) (All versions >= V4.2.0 < V4.2.5), SIPLUS ET 200SP IM 155-6 PN HF (6AG1155-6AU01-7CN0) (All versions >= V4.2.0 < V4.2.5), SIPLUS ET 200SP IM 155-6 PN HF T1 RAIL (6AG2155-6AU01-1CN0) (All versions >= V4.2.0 < V4.2.5), SIPLUS ET 200SP IM 155-6 PN HF TX RAIL (6AG2155-6AU01-4CN0) (All versions >= V4.2.0 < V4.2.5), SIPLUS NET PN/PN Coupler (6AG2158-3AD10-4XA0) (All versions < V6.0.0). Affected devices do not properly handle S7 protocol session disconnect requests. When receiving a valid S7 protocol Disconnect Request (COTP DR TPDU) on TCP port 102, the devices enter an improper session state. This could allow an attacker to cause the device to become unresponsive, leading to a denial-of-service condition that requires a power cycle to restore normal operation.

01

Behebungen

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

Ein Hersteller-Fix ist verfügbar.

  • BehobenSIMATIC ET 200SP IM 155-6 PN HA (incl. SIPLUS variants)siemens_psirt

    Update to V1.3 or later version

    https://support.industry.siemens.com/cs/ww/en/view/109987451/
  • BehobenSIMATIC ET 200SP IM 155-6 PN R1 (6ES7155-6AU00-0HM0)siemens_psirt

    Update to V6.0.1 or later version

    https://support.industry.siemens.com/cs/ww/en/view/109816000/
  • BehobenSIMATIC ET 200SP IM 155-6 PN/2 HF (6ES7155-6AU01-0CN0)siemens_psirt

    Update to V4.2.5 or later version

    https://support.industry.siemens.com/cs/ww/en/view/109769765/
  • BehobenSIMATIC ET 200SP IM 155-6 PN/3 HF (6ES7155-6AU30-0CN0)siemens_psirt

    Update to V4.2.2 or later version

    https://support.industry.siemens.com/cs/ww/en/view/109769419/
  • BehobenSIMATIC PN/PN Coupler (6ES7158-3AD10-0XA0)siemens_psirt

    Update to V6.0.0 or later version

    https://support.industry.siemens.com/cs/ww/en/view/109760973/
  • BehobenSIPLUS ET 200SP IM 155-6 PN HF (6AG1155-6AU01-2CN0)siemens_psirt

    Update to V4.2.5 or later version

    https://support.industry.siemens.com/cs/ww/en/view/109769765/
  • BehobenSIPLUS ET 200SP IM 155-6 PN HF (6AG1155-6AU01-7CN0)siemens_psirt

    Update to V4.2.5 or later version

    https://support.industry.siemens.com/cs/ww/en/view/109769765/
  • BehobenSIPLUS ET 200SP IM 155-6 PN HF T1 RAIL (6AG2155-6AU01-1CN0)siemens_psirt

    Update to V4.2.5 or later version

    https://support.industry.siemens.com/cs/ww/en/view/109769765/
  • BehobenSIPLUS ET 200SP IM 155-6 PN HF TX RAIL (6AG2155-6AU01-4CN0)siemens_psirt

    Update to V4.2.5 or later version

    https://support.industry.siemens.com/cs/ww/en/view/109769765/
  • BehobenSIPLUS NET PN/PN Coupler (6AG2158-3AD10-4XA0)siemens_psirt

    Update to V6.0.0 or later version

    https://support.industry.siemens.com/cs/ww/en/view/109760973/
  • BehobenSIMATIC ET 200SP IM 155-6 PN HA (incl. SIPLUS variants)cisa_csaf_ot

    Update to V1.3 or later version

    https://support.industry.siemens.com/cs/ww/en/view/109987451/
  • BehobenSIMATIC ET 200SP IM 155-6 PN R1 (6ES7155-6AU00-0HM0)cisa_csaf_ot

    Update to V6.0.1 or later version

    https://support.industry.siemens.com/cs/ww/en/view/109816000/
  • BehobenSIMATIC ET 200SP IM 155-6 PN/2 HF (6ES7155-6AU01-0CN0)cisa_csaf_ot

    Update to V4.2.5 or later version

    https://support.industry.siemens.com/cs/ww/en/view/109769765/
  • BehobenSIMATIC ET 200SP IM 155-6 PN/3 HF (6ES7155-6AU30-0CN0)cisa_csaf_ot

    Update to V4.2.2 or later version

    https://support.industry.siemens.com/cs/ww/en/view/109769419/
  • BehobenSIMATIC PN/PN Coupler (6ES7158-3AD10-0XA0)cisa_csaf_ot

    Update to V6.0.0 or later version

    https://support.industry.siemens.com/cs/ww/en/view/109760973/
  • BehobenSIPLUS ET 200SP IM 155-6 PN HF (6AG1155-6AU01-2CN0)cisa_csaf_ot

    Update to V4.2.5 or later version

    https://support.industry.siemens.com/cs/ww/en/view/109769765/
  • BehobenSIPLUS ET 200SP IM 155-6 PN HF (6AG1155-6AU01-7CN0)cisa_csaf_ot

    Update to V4.2.5 or later version

    https://support.industry.siemens.com/cs/ww/en/view/109769765/
  • BehobenSIPLUS ET 200SP IM 155-6 PN HF T1 RAIL (6AG2155-6AU01-1CN0)cisa_csaf_ot

    Update to V4.2.5 or later version

    https://support.industry.siemens.com/cs/ww/en/view/109769765/
  • BehobenSIPLUS ET 200SP IM 155-6 PN HF TX RAIL (6AG2155-6AU01-4CN0)cisa_csaf_ot

    Update to V4.2.5 or later version

    https://support.industry.siemens.com/cs/ww/en/view/109769765/
  • BehobenSIPLUS NET PN/PN Coupler (6AG2158-3AD10-4XA0)cisa_csaf_ot

    Update to V6.0.0 or later version

    https://support.industry.siemens.com/cs/ww/en/view/109760973/
  • MitigationSIMATIC ET 200AL IM 157-1 PN (6ES7157-1AB00-0AB0)siemens_psirt

    Filter the port 102 of the devices to only accepted connections to/from the IP addresses of machines that are trusted e.g. with an external firewall.

  • MitigationSIMATIC ET 200MP IM 155-5 PN HF (6ES7155-5AA00-0AC0)siemens_psirt

    Filter the port 102 of the devices to only accepted connections to/from the IP addresses of machines that are trusted e.g. with an external firewall.

  • MitigationSIMATIC ET 200SP IM 155-6 MF HF (6ES7155-6MU00-0CN0)siemens_psirt

    Filter the port 102 of the devices to only accepted connections to/from the IP addresses of machines that are trusted e.g. with an external firewall.

  • MitigationSIMATIC ET 200SP IM 155-6 PN HA (incl. SIPLUS variants)siemens_psirt

    Filter the port 102 of the devices to only accepted connections to/from the IP addresses of machines that are trusted e.g. with an external firewall.

  • MitigationSIMATIC ET 200SP IM 155-6 PN R1 (6ES7155-6AU00-0HM0)siemens_psirt

    Filter the port 102 of the devices to only accepted connections to/from the IP addresses of machines that are trusted e.g. with an external firewall.

  • MitigationSIMATIC ET 200SP IM 155-6 PN/2 HF (6ES7155-6AU01-0CN0)siemens_psirt

    Filter the port 102 of the devices to only accepted connections to/from the IP addresses of machines that are trusted e.g. with an external firewall.

  • MitigationSIMATIC ET 200SP IM 155-6 PN/3 HF (6ES7155-6AU30-0CN0)siemens_psirt

    Filter the port 102 of the devices to only accepted connections to/from the IP addresses of machines that are trusted e.g. with an external firewall.

  • MitigationSIMATIC PN/MF Coupler (6ES7158-3MU10-0XA0)siemens_psirt

    Filter the port 102 of the devices to only accepted connections to/from the IP addresses of machines that are trusted e.g. with an external firewall.

  • MitigationSIMATIC PN/PN Coupler (6ES7158-3AD10-0XA0)siemens_psirt

    Filter the port 102 of the devices to only accepted connections to/from the IP addresses of machines that are trusted e.g. with an external firewall.

  • MitigationSIPLUS ET 200MP IM 155-5 PN HF (6AG1155-5AA00-2AC0)siemens_psirt

    Filter the port 102 of the devices to only accepted connections to/from the IP addresses of machines that are trusted e.g. with an external firewall.

  • MitigationSIPLUS ET 200MP IM 155-5 PN HF (6AG1155-5AA00-7AC0)siemens_psirt

    Filter the port 102 of the devices to only accepted connections to/from the IP addresses of machines that are trusted e.g. with an external firewall.

  • MitigationSIPLUS ET 200MP IM 155-5 PN HF T1 RAIL (6AG2155-5AA00-1AC0)siemens_psirt

    Filter the port 102 of the devices to only accepted connections to/from the IP addresses of machines that are trusted e.g. with an external firewall.

  • MitigationSIPLUS ET 200SP IM 155-6 PN HF (6AG1155-6AU01-2CN0)siemens_psirt

    Filter the port 102 of the devices to only accepted connections to/from the IP addresses of machines that are trusted e.g. with an external firewall.

  • MitigationSIPLUS ET 200SP IM 155-6 PN HF (6AG1155-6AU01-7CN0)siemens_psirt

    Filter the port 102 of the devices to only accepted connections to/from the IP addresses of machines that are trusted e.g. with an external firewall.

  • MitigationSIPLUS ET 200SP IM 155-6 PN HF T1 RAIL (6AG2155-6AU01-1CN0)siemens_psirt

    Filter the port 102 of the devices to only accepted connections to/from the IP addresses of machines that are trusted e.g. with an external firewall.

  • MitigationSIPLUS ET 200SP IM 155-6 PN HF TX RAIL (6AG2155-6AU01-4CN0)siemens_psirt

    Filter the port 102 of the devices to only accepted connections to/from the IP addresses of machines that are trusted e.g. with an external firewall.

  • MitigationSIPLUS NET PN/PN Coupler (6AG2158-3AD10-4XA0)siemens_psirt

    Filter the port 102 of the devices to only accepted connections to/from the IP addresses of machines that are trusted e.g. with an external firewall.

  • MitigationSIMATIC ET 200AL IM 157-1 PN (6ES7157-1AB00-0AB0)cisa_csaf_ot

    Filter the port 102 of the devices to only accepted connections to/from the IP addresses of machines that are trusted e.g. with an external firewall.

  • MitigationSIMATIC ET 200MP IM 155-5 PN HF (6ES7155-5AA00-0AC0)cisa_csaf_ot

    Filter the port 102 of the devices to only accepted connections to/from the IP addresses of machines that are trusted e.g. with an external firewall.

  • MitigationSIMATIC ET 200SP IM 155-6 MF HF (6ES7155-6MU00-0CN0)cisa_csaf_ot

    Filter the port 102 of the devices to only accepted connections to/from the IP addresses of machines that are trusted e.g. with an external firewall.

  • MitigationSIMATIC ET 200SP IM 155-6 PN HA (incl. SIPLUS variants)cisa_csaf_ot

    Filter the port 102 of the devices to only accepted connections to/from the IP addresses of machines that are trusted e.g. with an external firewall.

  • MitigationSIMATIC ET 200SP IM 155-6 PN R1 (6ES7155-6AU00-0HM0)cisa_csaf_ot

    Filter the port 102 of the devices to only accepted connections to/from the IP addresses of machines that are trusted e.g. with an external firewall.

  • MitigationSIMATIC ET 200SP IM 155-6 PN/2 HF (6ES7155-6AU01-0CN0)cisa_csaf_ot

    Filter the port 102 of the devices to only accepted connections to/from the IP addresses of machines that are trusted e.g. with an external firewall.

  • MitigationSIMATIC ET 200SP IM 155-6 PN/3 HF (6ES7155-6AU30-0CN0)cisa_csaf_ot

    Filter the port 102 of the devices to only accepted connections to/from the IP addresses of machines that are trusted e.g. with an external firewall.

  • MitigationSIMATIC PN/MF Coupler (6ES7158-3MU10-0XA0)cisa_csaf_ot

    Filter the port 102 of the devices to only accepted connections to/from the IP addresses of machines that are trusted e.g. with an external firewall.

  • MitigationSIMATIC PN/PN Coupler (6ES7158-3AD10-0XA0)cisa_csaf_ot

    Filter the port 102 of the devices to only accepted connections to/from the IP addresses of machines that are trusted e.g. with an external firewall.

  • MitigationSIPLUS ET 200MP IM 155-5 PN HF (6AG1155-5AA00-2AC0)cisa_csaf_ot

    Filter the port 102 of the devices to only accepted connections to/from the IP addresses of machines that are trusted e.g. with an external firewall.

  • MitigationSIPLUS ET 200MP IM 155-5 PN HF (6AG1155-5AA00-7AC0)cisa_csaf_ot

    Filter the port 102 of the devices to only accepted connections to/from the IP addresses of machines that are trusted e.g. with an external firewall.

  • MitigationSIPLUS ET 200MP IM 155-5 PN HF T1 RAIL (6AG2155-5AA00-1AC0)cisa_csaf_ot

    Filter the port 102 of the devices to only accepted connections to/from the IP addresses of machines that are trusted e.g. with an external firewall.

  • MitigationSIPLUS ET 200SP IM 155-6 PN HF (6AG1155-6AU01-2CN0)cisa_csaf_ot

    Filter the port 102 of the devices to only accepted connections to/from the IP addresses of machines that are trusted e.g. with an external firewall.

  • MitigationSIPLUS ET 200SP IM 155-6 PN HF (6AG1155-6AU01-7CN0)cisa_csaf_ot

    Filter the port 102 of the devices to only accepted connections to/from the IP addresses of machines that are trusted e.g. with an external firewall.

  • MitigationSIPLUS ET 200SP IM 155-6 PN HF T1 RAIL (6AG2155-6AU01-1CN0)cisa_csaf_ot

    Filter the port 102 of the devices to only accepted connections to/from the IP addresses of machines that are trusted e.g. with an external firewall.

  • MitigationSIPLUS ET 200SP IM 155-6 PN HF TX RAIL (6AG2155-6AU01-4CN0)cisa_csaf_ot

    Filter the port 102 of the devices to only accepted connections to/from the IP addresses of machines that are trusted e.g. with an external firewall.

  • MitigationSIPLUS NET PN/PN Coupler (6AG2158-3AD10-4XA0)cisa_csaf_ot

    Filter the port 102 of the devices to only accepted connections to/from the IP addresses of machines that are trusted e.g. with an external firewall.

  • Kein Fix geplantSIMATIC ET 200AL IM 157-1 PN (6ES7157-1AB00-0AB0)siemens_psirt

    Currently no fix is planned

  • Kein Fix geplantSIMATIC ET 200MP IM 155-5 PN HF (6ES7155-5AA00-0AC0)siemens_psirt

    Currently no fix is planned

  • Kein Fix geplantSIMATIC ET 200SP IM 155-6 MF HF (6ES7155-6MU00-0CN0)siemens_psirt

    Currently no fix is planned

  • Kein Fix geplantSIMATIC PN/MF Coupler (6ES7158-3MU10-0XA0)siemens_psirt

    Currently no fix is planned

  • Kein Fix geplantSIPLUS ET 200MP IM 155-5 PN HF (6AG1155-5AA00-2AC0)siemens_psirt

    Currently no fix is planned

  • Kein Fix geplantSIPLUS ET 200MP IM 155-5 PN HF (6AG1155-5AA00-7AC0)siemens_psirt

    Currently no fix is planned

  • Kein Fix geplantSIPLUS ET 200MP IM 155-5 PN HF T1 RAIL (6AG2155-5AA00-1AC0)siemens_psirt

    Currently no fix is planned

  • Kein Fix geplantSIMATIC ET 200AL IM 157-1 PN (6ES7157-1AB00-0AB0)cisa_csaf_ot

    Currently no fix is planned

  • Kein Fix geplantSIMATIC ET 200MP IM 155-5 PN HF (6ES7155-5AA00-0AC0)cisa_csaf_ot

    Currently no fix is planned

  • Kein Fix geplantSIMATIC ET 200SP IM 155-6 MF HF (6ES7155-6MU00-0CN0)cisa_csaf_ot

    Currently no fix is planned

  • Kein Fix geplantSIMATIC PN/MF Coupler (6ES7158-3MU10-0XA0)cisa_csaf_ot

    Currently no fix is planned

  • Kein Fix geplantSIPLUS ET 200MP IM 155-5 PN HF (6AG1155-5AA00-2AC0)cisa_csaf_ot

    Currently no fix is planned

  • Kein Fix geplantSIPLUS ET 200MP IM 155-5 PN HF (6AG1155-5AA00-7AC0)cisa_csaf_ot

    Currently no fix is planned

  • Kein Fix geplantSIPLUS ET 200MP IM 155-5 PN HF T1 RAIL (6AG2155-5AA00-1AC0)cisa_csaf_ot

    Currently no fix is planned

02

cvss

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

8.7
010

Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen⚠ Quellen uneinig · medium–high · 6.6–8.7

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · productcert@siemens.com DEAusnutzbarkeit 3.9 · Auswirkung 3.6
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · CISA US
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · Siemens ProductCERT DE
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · NCSC-NL NL
v4.08.7highCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:Nsecondary · ENISA EU
v4.08.7highCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · productcert@siemens.com DE
v4.06.6mediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · 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-400USCWE-400USCWE-400USCWE-400US
05

betroffene Produkte (189)

Betroffene Produkte und Versionsbereiche.

20 von 189 angezeigt
06

Advisories (3)

Hersteller- und Ökosystem-Meldungen dazu.

  • NCSC-2026-0005Kwetsbaarheden verholpen in Siemens productenNL2026-01-13csaf · ncsc_nlNL

    Siemens heeft kwetsbaarheden verholpen in diverse producten als Industrial Edge Devices, SCALANCE, SIMATIC, SIPLUS en Telecontrol Server.

  • SSA-674753SSA-674753: Denial-of-Service Vulnerability in ET 200 Devices2026-01-13csaf · siemens_psirtDE

    Siemens ET 200 devices contain a denial-of-service vulnerability that could be triggered by sending a valid S7 protocol Disconnect Request (COTP DR TPDU), causing the device to become unresponsive and require a power cycle to recover. Siemens has released new versions for several affected products and recommends to update to the latest versions. Siemens is preparing further fix versions and recommends specific countermeasures for products where fixes are not, or not yet available.

  • ICSA-26-015-04Siemens SIMATIC and SIPLUS products2026-01-13icsa · cisa_csaf_otUS

    Siemens ET 200 devices contain a denial-of-service vulnerability that could be triggered by sending a valid S7 protocol Disconnect Request (COTP DR TPDU), causing the device to become unresponsive and require a power cycle to recover. Siemens has released new versions for several affected products and recommends to update to the latest versions. Siemens is preparing further fix versions and recommends specific countermeasures for products where fixes are not, or not yet available.

07

auch bekannt als (3)

Weitere Namen und Kennungen dieser Entität.

08

quellen

Welche Quellen diesen Datensatz belegen und wann.

cnnvdenisa_euvdcisa_csaf_otncsc_nlsiemens_psirtNVDCVE.orgMITRE
veröffentlicht 2026-01-13geändert 2026-06-17
09

Referenzen (4)

Externe Belege — Patches, Meldungen, Analysen.

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