{"answers":{"affected":"It affects 3 products.","exploited":"There is no known exploitation of CVE-2021-33719 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-33719 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-33719 is a critical memory corruption vulnerability in Siemens SIPROTEC 5 relays with CPU variants CP050, published on 14 Sep 2021. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-33719 and fix it if it is affected.\n\nWhat it is: CVE-2021-33719 is a critical memory corruption vulnerability in Siemens SIPROTEC 5 relays with CPU variants CP050, published on 14 Sep 2021. 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-2021-33719 in the wild and no public exploit code.\n\nAffected product: Siemens SIPROTEC 5 relays with CPU variants CP050. 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-2021-33719/ (Markdown: https://insights.sbomify.com/CVE-2021-33719/index.md)","id":"CVE-2021-33719","markdown":"https://insights.sbomify.com/CVE-2021-33719/index.md","name":"CVE-2021-33719","record":{"aliases":["GHSA-6936-h7xw-gfq3"],"analysis":{"component_type":"ics_ot","fix_type":"upgrade","impacts":["denial_of_service","code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"SIPROTEC 5 relay","requires_auth":"none","summary":"Attackers can cause denial of service or remote code execution on SIPROTEC 5 relays by sending crafted packets to port 4443.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"siemens","cpe":[{"product":"siprotec_5_with_cpu_variant_cp050","vendor":"siemens"},{"product":"siprotec_5_with_cpu_variant_cp100","vendor":"siemens"},{"product":"siprotec_5_with_cpu_variant_cp300","vendor":"siemens"}],"cvss":{"score":9.8,"severity":"critical","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-120","name":"Buffer Copy without Checking Size of Input"}],"description":"A vulnerability has been identified in SIPROTEC 5 relays with CPU variants CP050 (All versions \u003c V8.80), SIPROTEC 5 relays with CPU variants CP100 (All versions \u003c V8.80), SIPROTEC 5 relays with CPU variants CP300 (All versions \u003c V8.80). Specially crafted packets sent to port 4443/tcp could cause a Denial-of-Service condition or potential remote code execution.","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":"Memory corruption in SIPROTEC 5 relays with CPU variants CP050","id":"CVE-2021-33719","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"Denial of service in SIPROTEC 5 relays with CPU variants CP050","id":"CVE-2021-33720"},"packages":[],"prev":{"headline":"Missing authorization in Mendix Applications using Mendix 7","id":"CVE-2021-33718"},"products":["SIPROTEC 5 relays with CPU variants CP050","SIPROTEC 5 relays with CPU variants CP100","SIPROTEC 5 relays with CPU variants CP300"],"published":"2021-09-14","related":[{"cvss_score":7.5,"headline":"Denial of service in SIPROTEC 5 relays with CPU variants CP050","id":"CVE-2021-33720","kev_date_added":null,"published":"2021-09-14"},{"cvss_score":7.5,"headline":"Denial of service in SIPROTEC 5 relays with CPU variants CP050","id":"CVE-2021-37206","kev_date_added":null,"published":"2021-09-14"}],"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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-03","vendors":["Siemens"]},"summary":"Attackers can cause denial of service or remote code execution on SIPROTEC 5 relays by sending crafted packets to port 4443.","url":"https://insights.sbomify.com/CVE-2021-33719/"}