{"answers":{"affected":"It affects 3 products.","exploited":"There is no known exploitation of CVE-2021-20607 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-20607 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-20607 is a medium-severity vulnerability in Mitsubishi Electric GX Works2; Mitsubishi Electric MELSOFT Navigator; Mitsubishi Electric EZSocket, published on 17 Dec 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2021-20607 and fix it if it is affected.\n\nWhat it is: CVE-2021-20607 is a medium-severity vulnerability in Mitsubishi Electric GX Works2; Mitsubishi Electric MELSOFT Navigator; Mitsubishi Electric EZSocket, published on 17 Dec 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2021-20607 in the wild and no public exploit code.\n\nAffected product: Mitsubishi Electric GX Works2; Mitsubishi Electric MELSOFT Navigator; Mitsubishi Electric EZSocket. 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-2021-20607/ (Markdown: https://insights.sbomify.com/CVE-2021-20607/index.md)","id":"CVE-2021-20607","markdown":"https://insights.sbomify.com/CVE-2021-20607/index.md","name":"CVE-2021-20607","record":{"aliases":["GHSA-c5g3-qqp2-f4cv"],"analysis":{"component_type":"desktop_application","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"PLC programming software","requires_auth":"none","summary":"An attacker can cause a denial of service in Mitsubishi Electric PLC programming software by tricking a user into opening a maliciously crafted project file.","user_interaction":"required","vuln_class":"integer_overflow"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Mitsubishi","cpe":[{"product":"ezsocket","vendor":"mitsubishielectric"},{"product":"gx_works2","vendor":"mitsubishielectric"},{"product":"melsoft_navigator","vendor":"mitsubishielectric"}],"cvss":{"score":5.5,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-191","name":"Integer Underflow (Wrap or Wraparound)"}],"description":"Integer Underflow vulnerability in Mitsubishi Electric GX Works2 versions 1.606G and prior, Mitsubishi Electric MELSOFT Navigator versions 2.84N and prior and Mitsubishi Electric EZSocket versions 5.4 and prior allows an attacker to cause a DoS condition in the software by getting a user to open malicious project file specially crafted by an attacker.","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":"Integer overflow in Mitsubishi Electric GX Works2; Mitsubishi Electric MELSOFT Navigator; Mitsubishi Electric EZSocket","id":"CVE-2021-20607","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"integer_overflow","year":"2021"},"n_packages":0,"n_references":3,"next":{"headline":"Denial of service in GX Works2","id":"CVE-2021-20608"},"packages":[],"prev":{"headline":"Denial of service in Mitsubishi Electric GX Works2; Mitsubishi Electric MELSOFT Navigator; Mitsubishi Electric EZSocket","id":"CVE-2021-20606"},"products":["Mitsubishi Electric GX Works2; Mitsubishi Electric MELSOFT Navigator; Mitsubishi Electric EZSocket"],"published":"2021-12-17","related":[{"cvss_score":9.8,"headline":"Code injection in EZSocket","id":"CVE-2023-6943","kev_date_added":null,"published":"2024-01-30"},{"cvss_score":7.5,"headline":"Auth bypass in EZSocket","id":"CVE-2023-6942","kev_date_added":null,"published":"2024-01-30"},{"cvss_score":5.5,"headline":"Denial of service in Mitsubishi Electric GX Works2; Mitsubishi Electric MELSOFT Navigator; Mitsubishi Electric EZSocket","id":"CVE-2021-20606","kev_date_added":null,"published":"2021-12-17"}],"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":"An attacker can cause a denial of service in Mitsubishi Electric PLC programming software by tricking a user into opening a maliciously crafted project file.","url":"https://insights.sbomify.com/CVE-2021-20607/"}