{"answers":{"affected":"It affects 12 products.","exploited":"There is no known exploitation of CVE-2020-15783 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2020-15783 yet. Limit exposure of the affected software until one is available.","what":"CVE-2020-15783 is a high-severity denial of service vulnerability in Siemens SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants), published on 12 Nov 2020. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2020-15783 and fix it if it is affected.\n\nWhat it is: CVE-2020-15783 is a high-severity denial of service vulnerability in Siemens SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants), published on 12 Nov 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2020-15783 in the wild and no public exploit code.\n\nAffected product: Siemens SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants). No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2020-15783/ (Markdown: https://insights.sbomify.com/CVE-2020-15783/index.md)","id":"CVE-2020-15783","markdown":"https://insights.sbomify.com/CVE-2020-15783/index.md","name":"CVE-2020-15783","record":{"aliases":["GHSA-h3cm-r647-2vf6"],"analysis":{"component_type":"ics_ot","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Siemens PLC","requires_auth":"none","summary":"Attackers can cause a denial of service on Siemens industrial controllers by sending crafted packets, requiring a cold restart to recover.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"siemens","cpe":[{"product":"simatic_s7-300_cpu_312_firmware","vendor":"siemens"},{"product":"simatic_s7-300_cpu_314_firmware","vendor":"siemens"},{"product":"simatic_s7-300_cpu_315-2_dp_firmware","vendor":"siemens"},{"product":"simatic_s7-300_cpu_315-2_pn_firmware","vendor":"siemens"},{"product":"simatic_s7-300_cpu_315f-2_dp_firmware","vendor":"siemens"},{"product":"simatic_s7-300_cpu_315f-2_pn_firmware","vendor":"siemens"},{"product":"simatic_s7-300_cpu_317-2_dp_firmware","vendor":"siemens"},{"product":"simatic_s7-300_cpu_317-2_pn_firmware","vendor":"siemens"},{"product":"simatic_s7-300_cpu_317f-2_dp_firmware","vendor":"siemens"},{"product":"simatic_s7-300_cpu_317f-2_pn_firmware","vendor":"siemens"},{"product":"simatic_tdc_cpu555_firmware","vendor":"siemens"},{"product":"sinumerik_840d_sl_firmware","vendor":"siemens"}],"cvss":{"score":7.5,"severity":"high","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-400","name":"Uncontrolled Resource Consumption"}],"description":"A vulnerability has been identified in SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions), SIMATIC TDC CPU555 (All versions), SINUMERIK 840D sl (All versions). Sending multiple specially crafted packets to the affected devices could cause a Denial-of-Service on port 102. A cold restart is required to recover the service.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Denial of service in SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants)","id":"CVE-2020-15783","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2020"},"n_packages":0,"n_references":1,"next":{"headline":"Information disclosure in Spectrum Power 4","id":"CVE-2020-15784"},"packages":[],"prev":{"headline":"Memory corruption in SIMATIC Drive Controller family","id":"CVE-2020-15782"},"products":["SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants)","SIMATIC TDC CPU555","SINUMERIK 840D sl"],"published":"2020-11-12","related":[{"cvss_score":6.5,"headline":"Information disclosure in SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants)","id":"CVE-2020-15791","kev_date_added":null,"published":"2020-09-09"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-06-02","vendors":["Siemens"]},"summary":"Attackers can cause a denial of service on Siemens industrial controllers by sending crafted packets, requiring a cold restart to recover.","url":"https://insights.sbomify.com/CVE-2020-15783/"}