{"answers":{"affected":"It affects 12 products.","exploited":"There is no known exploitation of CVE-2019-18336 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2019-18336 yet. Limit exposure of the affected software until one is available.","what":"CVE-2019-18336 is a high-severity denial of service vulnerability in Siemens AG SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants), published on 10 Mar 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-2019-18336 and fix it if it is affected.\n\nWhat it is: CVE-2019-18336 is a high-severity denial of service vulnerability in Siemens AG SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants), published on 10 Mar 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-2019-18336 in the wild and no public exploit code.\n\nAffected product: Siemens AG 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-2019-18336/ (Markdown: https://insights.sbomify.com/CVE-2019-18336/index.md)","id":"CVE-2019-18336","markdown":"https://insights.sbomify.com/CVE-2019-18336/index.md","name":"CVE-2019-18336","record":{"aliases":["GHSA-q53p-vg4g-3rxp"],"analysis":{"component_type":"ics_ot","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Siemens PLC","requires_auth":"none","summary":"Unauthenticated remote attackers can cause Siemens industrial controllers to enter defect mode via crafted Profinet packets, requiring a 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_ifm_firmware","vendor":"siemens"},{"product":"simatic_s7-300_cpu_313_firmware","vendor":"siemens"},{"product":"simatic_s7-300_cpu_314_firmware","vendor":"siemens"},{"product":"simatic_s7-300_cpu_314_ifm_firmware","vendor":"siemens"},{"product":"simatic_s7-300_cpu_315-2_dp_firmware","vendor":"siemens"},{"product":"simatic_s7-300_cpu_315_firmware","vendor":"siemens"},{"product":"simatic_s7-300_cpu_316-2_dp_firmware","vendor":"siemens"},{"product":"simatic_s7-300_cpu_318-2_firmware","vendor":"siemens"},{"product":"simatic_s7-300_cpu_firmware","vendor":"siemens"},{"product":"simatic_tdc_cp51m1_firmware","vendor":"siemens"},{"product":"simatic_tdc_cpu555_firmware","vendor":"siemens"},{"product":"sinumerik_840d_sl","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 \u003c V3.X.17), SIMATIC TDC CP51M1 (All versions \u003c V1.1.8), SIMATIC TDC CPU555 (All versions \u003c V1.1.1), SINUMERIK 840D sl (All versions \u003c V4.8.6), SINUMERIK 840D sl (All versions \u003c V4.94). Specially crafted packets sent to port 102/tcp (Profinet) could cause the affected device to go into defect mode. A restart is required in order to recover the system. Successful exploitation requires an attacker to have network access to port 102/tcp, with no authentication. No user interation is required. At the time of advisory publication no public exploitation of this security vulnerability was known.","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-2019-18336","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2019"},"n_packages":0,"n_references":1,"next":{"headline":"Auth bypass in Control Center Server (CCS)","id":"CVE-2019-18337"},"packages":[],"prev":{"headline":"Information disclosure in SPPA-T3000 Application Server","id":"CVE-2019-18335"},"products":["SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants)","SIMATIC TDC CP51M1","SIMATIC TDC CPU555","SINUMERIK 840D sl"],"published":"2020-03-10","related":[],"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 AG"]},"summary":"Unauthenticated remote attackers can cause Siemens industrial controllers to enter defect mode via crafted Profinet packets, requiring a restart to recover.","url":"https://insights.sbomify.com/CVE-2019-18336/"}