CVE-2020-15796
mediumPriorität · verfolgen · 31EPSS 0.016 · 76. PerzentilEUUSEPSS · bewertet 2026-10-27
A vulnerability has been identified in SIMATIC ET 200SP Open Controller (incl. SIPLUS variants) (V20.8), SIMATIC S7-1500 Software Controller (V20.8). The web server of the affected products contains a vulnerability that could allow a remote attacker to trigger a denial-of-service condition by sending a specially crafted HTTP request.
Behebungen
Hersteller-Fix, Mitigation oder Workaround, wie von den Quellen veröffentlicht.
Ein Hersteller-Fix ist verfügbar.
- BehobenSIMATIC ET 200SP Open Controller (incl. SIPLUS variants)cisa_csaf_ot
If the PC Station web server does not restart automatically Windows reboot is required. This can be done while the control system is running as the PLC control functionality is not affected.
- BehobenSIMATIC S7-1500 Software Controllercisa_csaf_ot
If the PC Station web server does not restart automatically Windows reboot is required. This can be done while the control system is running as the PLC control functionality is not affected.
- MitigationSIMATIC ET 200SP Open Controller (incl. SIPLUS variants)cisa_csaf_ot
As a general security measure, Siemens strongly recommends to protect network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends to configure the environment according to Siemens' operational guidelines for Industrial Security (Download: https://www.siemens.com/cert/operational-guidelines-industrial-security), and to follow the recommendations in the product manuals. Additional information on Industrial Security by Siemens can be found at: https://www.siemens.com/industrialsecurity
- MitigationSIMATIC S7-1500 Software Controllercisa_csaf_ot
As a general security measure, Siemens strongly recommends to protect network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends to configure the environment according to Siemens' operational guidelines for Industrial Security (Download: https://www.siemens.com/cert/operational-guidelines-industrial-security), and to follow the recommendations in the product manuals. Additional information on Industrial Security by Siemens can be found at: https://www.siemens.com/industrialsecurity
cvss
Technischer Schweregrad, 0–10. Eine Zeile je Quelle.
Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen⚠ Quellen uneinig · medium–high · 5–7.5
schwächen
Die CWE-Schwächeklassen, zu denen dies gehört.
betroffene Produkte (8)
Betroffene Produkte und Versionsbereiche.
- siemens simatic et 200sp open controller firmware≤ 20.8nvdUScpe:2.3:o:siemens:simatic_et_200sp_open_controller_firmware:*:*:*:*:*:*:*:*
- siemens simatic s7-1500 software controller firmware≤ 20.8nvdUScpe:2.3:o:siemens:simatic_s7-1500_software_controller_firmware:*:*:*:*:*:*:*:*
Advisories (1)
Hersteller- und Ökosystem-Meldungen dazu.
- ICSA-20-343-09Siemens SIMATIC Controller Web Servers2020-12-08icsa · cisa_csaf_otUS
Successful exploitation of this vulnerability could allow an attacker to cause a denial-of-service condition.
auch bekannt als (3)
Weitere Namen und Kennungen dieser Entität.
quellen
Welche Quellen diesen Datensatz belegen und wann.
Referenzen (8)
Externe Belege — Patches, Meldungen, Analysen.
- https://cert-portal.siemens.com/productcert/pdf/SSA-700697.pdfPatchcnnvd
- https://cert-portal.siemens.com/productcert/pdf/ssa-700697.pdfcnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2020-15796cnnvd
- https://us-cert.cisa.gov/ics/advisories/icsa-20-343-09cnnvd
- https://vigilance.fr/vulnerability/Siemens-SIMATIC-denial-of-service-via-HTTP-Request-34071cnnvd
- https://www.auscert.org.au/bulletins/ESB-2020.4359/cnnvd
- https://cert-portal.siemens.com/productcert/pdf/ssa-700697.pdfenisa_euvd
- https://cert-portal.siemens.com/productcert/pdf/ssa-700697.pdfVendor Advisorynvd
Angreifer nutzen Schwachstellen wie diese gegen im Internet exponierte Dienste aus. Sehen Sie mit einem kostenlosen Passiv-Scan, was exponiert ist.
Kostenloser Scan