{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2011-20001 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2011-20001 yet. Limit exposure of the affected software until one is available.","what":"CVE-2011-20001 is a high-severity denial of service vulnerability in Siemens SIMATIC S7-1200 CPU V1 family (incl. SIPLUS variants), published on 14 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2011-20001 and fix it if it is affected.\n\nWhat it is: CVE-2011-20001 is a high-severity denial of service vulnerability in Siemens SIMATIC S7-1200 CPU V1 family (incl. SIPLUS variants), published on 14 Oct 2025. 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-2011-20001 in the wild and no public exploit code.\n\nAffected product: Siemens SIMATIC S7-1200 CPU V1 family (incl. 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-2011-20001/ (Markdown: https://insights.sbomify.com/CVE-2011-20001/index.md)","id":"CVE-2011-20001","markdown":"https://insights.sbomify.com/CVE-2011-20001/index.md","name":"CVE-2011-20001","record":{"aliases":["GHSA-hfrj-93xv-cmrv"],"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 denial of service on Siemens SIMATIC S7-1200 CPUs by sending malformed HTTP traffic.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"siemens","cpe":[],"cvss":{"score":8.7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-20","name":"Improper Input Validation"}],"description":"A vulnerability has been identified in SIMATIC S7-1200 CPU V1 family (incl. SIPLUS variants) (All versions \u003c V2.0.3), SIMATIC S7-1200 CPU V2 family (incl. SIPLUS variants) (All versions \u003c V2.0.3). The web server interface of affected devices improperly processes incoming malformed HTTP traffic at high rate. This could allow an unauthenticated remote attacker to force the device entering the stop/defect state, thus creating a denial of service condition.","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 S7-1200 CPU V1 family (incl. SIPLUS variants)","id":"CVE-2011-20001","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2011"},"n_packages":0,"n_references":1,"next":{"headline":"Other in SIMATIC S7-1200 CPU V1 family (incl. SIPLUS variants)","id":"CVE-2011-20002"},"packages":[],"prev":{"headline":"Module::Load versions before 0.22 for Perl allow arbitrary modules outside of @INC to be loaded","id":"CVE-2011-10043"},"products":["SIMATIC S7-1200 CPU V1 family (incl. SIPLUS variants)","SIMATIC S7-1200 CPU V2 family (incl. SIPLUS variants)"],"published":"2025-10-14","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-10-14","vendors":["Siemens"]},"summary":"Unauthenticated remote attackers can cause denial of service on Siemens SIMATIC S7-1200 CPUs by sending malformed HTTP traffic.","url":"https://insights.sbomify.com/CVE-2011-20001/"}