{"answers":{"affected":"It affects 2 products.","exploited":"There is no known exploitation of CVE-2021-22743 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-22743 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-22743 is a low-severity denial of service vulnerability in Triconex TCM 4351B installed on Tricon V11.3.x systems., published on 26 May 2021. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-22743 and fix it if it is affected.\n\nWhat it is: CVE-2021-22743 is a low-severity denial of service vulnerability in Triconex TCM 4351B installed on Tricon V11.3.x systems., published on 26 May 2021. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-22743 in the wild and no public exploit code.\n\nAffected product: Triconex TCM 4351B installed on Tricon V11.3.x systems.. 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-2021-22743/ (Markdown: https://insights.sbomify.com/CVE-2021-22743/index.md)","id":"CVE-2021-22743","markdown":"https://insights.sbomify.com/CVE-2021-22743/index.md","name":"CVE-2021-22743","record":{"aliases":["GHSA-48h6-xg8f-qv46"],"analysis":{"component_type":"ics_ot","fix_type":"no_fix_stated","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":true,"product_category":"Triconex TCM module","requires_auth":"high_privilege","summary":"Malformed packets can reset the Triconex TCM module when the write-protect keyswitch is in the program position, causing a denial of service.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"schneider","cpe":[{"product":"tcm_4351b_firmware","vendor":"schneider-electric"},{"product":"triconex_model_3009_mp_firmware","vendor":"schneider-electric"}],"cvss":{"score":3.9,"severity":"low","source":"nvd","vector":"CVSS:3.1/AV:P/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-754","name":"Improper Check for Unusual or Exceptional Conditions"}],"description":"Improper Check for Unusual or Exceptional Conditions vulnerability exists in Triconex TCM 4351B installed on Tricon V11.3.x systems that could cause module reset when TCM receives malformed TriStation packets while the write-protect keyswitch is in the program position.","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 Triconex TCM 4351B installed on Tricon V11.3.x systems.","id":"CVE-2021-22743","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"Denial of service in Triconex Model 3009 MP installed on Tricon V11.3.x systems","id":"CVE-2021-22744"},"packages":[],"prev":{"headline":"Denial of service in Triconex Model 3009 MP installed on Tricon V11.3.x systems","id":"CVE-2021-22742"},"products":["Triconex TCM 4351B installed on Tricon V11.3.x systems."],"published":"2021-05-26","related":[{"cvss_score":3.9,"headline":"Denial of service in Triconex Model 3009 MP installed on Tricon V11.3.x systems","id":"CVE-2021-22742","kev_date_added":null,"published":"2021-05-26"},{"cvss_score":3.9,"headline":"Denial of service in Triconex Model 3009 MP installed on Tricon V11.3.x systems","id":"CVE-2021-22744","kev_date_added":null,"published":"2021-05-26"},{"cvss_score":3.9,"headline":"Denial of service in Triconex Model 3009 MP installed on Tricon V11.3.x systems","id":"CVE-2021-22745","kev_date_added":null,"published":"2021-05-26"},{"cvss_score":3.9,"headline":"Denial of service in Triconex Model 3009 MP installed on Tricon V11.3.x systems","id":"CVE-2021-22746","kev_date_added":null,"published":"2021-05-26"},{"cvss_score":3.9,"headline":"Denial of service in Triconex Model 3009 MP installed on Tricon V11.3.x systems","id":"CVE-2021-22747","kev_date_added":null,"published":"2021-05-26"}],"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":["n/a"]},"summary":"Malformed packets can reset the Triconex TCM module when the write-protect keyswitch is in the program position, causing a denial of service.","url":"https://insights.sbomify.com/CVE-2021-22743/"}