{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-29240 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-29240 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-29240 is a high-severity code injection vulnerability in n/a, published on 4 May 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-2021-29240 and fix it if it is affected.\n\nWhat it is: CVE-2021-29240 is a high-severity code injection vulnerability in n/a, published on 4 May 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-2021-29240 in the wild and no public exploit code.\n\nAffected product: n/a. 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-2021-29240/ (Markdown: https://insights.sbomify.com/CVE-2021-29240/index.md)","id":"CVE-2021-29240","markdown":"https://insights.sbomify.com/CVE-2021-29240/index.md","name":"CVE-2021-29240","record":{"aliases":["GHSA-hp56-5pmq-v75c"],"analysis":{"component_type":"developer_tool","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"CODESYS Development System","requires_auth":"none","summary":"Attackers can install malicious CODESYS packages due to missing validity checks, leading to arbitrary code execution on the development system.","user_interaction":"required","vuln_class":"code_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"development_system","vendor":"codesys"}],"cvss":{"score":7.8,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[],"description":"The Package Manager of CODESYS Development System 3 before 3.5.17.0 does not check the validity of packages before installation and may be used to install CODESYS packages with malicious content.","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":"Code injection in n/a","id":"CVE-2021-29240","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"code_injection","year":"2021"},"n_packages":0,"n_references":3,"next":{"headline":"Null dereference in n/a","id":"CVE-2021-29241"},"packages":[],"prev":{"headline":"Code injection in n/a","id":"CVE-2021-29239"},"products":["n/a"],"published":"2021-05-04","related":[{"cvss_score":8.8,"headline":"CODESYS: Missing integrity check in CODESYS Development System","id":"CVE-2023-3663","kev_date_added":null,"published":"2023-08-03"},{"cvss_score":8.8,"headline":"Deserialization in CODESYS","id":"CVE-2021-21863","kev_date_added":null,"published":"2021-08-05"},{"cvss_score":8.8,"headline":"Deserialization in CODESYS","id":"CVE-2021-21865","kev_date_added":null,"published":"2021-08-02"},{"cvss_score":8.8,"headline":"Deserialization in CODESYS","id":"CVE-2021-21866","kev_date_added":null,"published":"2021-08-02"},{"cvss_score":8.5,"headline":"Incorrect Default Permissions in CODESYS Development System","id":"CVE-2026-44468","kev_date_added":null,"published":"2026-05-26"},{"cvss_score":8.5,"headline":"Incorrect Default Permissions in CODESYS Development System","id":"CVE-2026-44469","kev_date_added":null,"published":"2026-05-26"},{"cvss_score":7.8,"headline":"Deserialization in CODESYS","id":"CVE-2021-21864","kev_date_added":null,"published":"2021-08-02"}],"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":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-03","vendors":["n/a"]},"summary":"Attackers can install malicious CODESYS packages due to missing validity checks, leading to arbitrary code execution on the development system.","url":"https://insights.sbomify.com/CVE-2021-29240/"}