{"answers":{"affected":"It affects 6 products.","exploited":"There is no known exploitation of CVE-2021-20589 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-20589 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-20589 is a high-severity denial of service vulnerability in GOT2000 series; GOT SIMPLE series; GT SoftGOT2000; Tension Controller, published on 19 May 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-2021-20589 and fix it if it is affected.\n\nWhat it is: CVE-2021-20589 is a high-severity denial of service vulnerability in GOT2000 series; GOT SIMPLE series; GT SoftGOT2000; Tension Controller, published on 19 May 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-2021-20589 in the wild and no public exploit code.\n\nAffected product: GOT2000 series; GOT SIMPLE series; GT SoftGOT2000; Tension Controller. 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-2021-20589/ (Markdown: https://insights.sbomify.com/CVE-2021-20589/index.md)","id":"CVE-2021-20589","markdown":"https://insights.sbomify.com/CVE-2021-20589/index.md","name":"CVE-2021-20589","record":{"aliases":["GHSA-q2w2-jjv8-fvww"],"analysis":{"component_type":"ics_ot","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Mitsubishi HMI/Controller","requires_auth":"none","summary":"Remote unauthenticated attackers can stop communication functions in Mitsubishi GOT and Tension Controller devices via crafted packets.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Mitsubishi","cpe":[{"product":"gs21_firmware","vendor":"mitsubishi"},{"product":"gt21_firmware","vendor":"mitsubishi"},{"product":"gt23_firmware","vendor":"mitsubishi"},{"product":"gt25_firmware","vendor":"mitsubishi"},{"product":"gt27_firmware","vendor":"mitsubishi"},{"product":"gt_softgot2000_firmware","vendor":"mitsubishi"}],"cvss":{"score":7.5,"severity":"high","source":"nvd","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-119","name":"Improper Restriction of Operations within the Bounds of a Memory Buffer"}],"description":"Buffer access with incorrect length value vulnerability in GOT2000 series GT27 model communication driver versions 01.19.000 through 01.38.000, GT25 model communication driver versions 01.19.000 through 01.38.000, GT23 model communication driver versions 01.19.000 through 01.38.000 and GT21 model communication driver versions 01.21.000 through 01.39.000, GOT SIMPLE series GS21 model communication driver versions 01.21.000 through 01.39.000, GT SoftGOT2000 versions 1.170C through 1.250L and Tension Controller LE7-40GU-L Screen package data for MODBUS/TCP V1.00 allows a remote unauthenticated attacker to stop the communication function of the products via specially crafted packets.","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 GOT2000 series; GOT SIMPLE series; GT SoftGOT2000; Tension Controller","id":"CVE-2021-20589","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2021"},"n_packages":0,"n_references":2,"next":{"headline":"Auth bypass in GOT SIMPLE series GS21 model GS2107-WTBD-N","id":"CVE-2021-20590"},"packages":[],"prev":{"headline":"Integer overflow in CPU Module Logging Configuration Tool","id":"CVE-2021-20588"},"products":["GOT2000 series; GOT SIMPLE series; GT SoftGOT2000; Tension Controller"],"published":"2021-05-19","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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-03","vendors":["n/a"]},"summary":"Remote unauthenticated attackers can stop communication functions in Mitsubishi GOT and Tension Controller devices via crafted packets.","url":"https://insights.sbomify.com/CVE-2021-20589/"}