{"answers":{"affected":"It affects 4 products.","exploited":"There is no known exploitation of CVE-2021-21039 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-21039 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-21039 is a high-severity use after free vulnerability in Adobe Acrobat, published on 11 Feb 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-2021-21039 and fix it if it is affected.\n\nWhat it is: CVE-2021-21039 is a high-severity use after free vulnerability in Adobe Acrobat, published on 11 Feb 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-2021-21039 in the wild and no public exploit code.\n\nAffected product: Adobe Acrobat. 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-2021-21039/ (Markdown: https://insights.sbomify.com/CVE-2021-21039/index.md)","id":"CVE-2021-21039","markdown":"https://insights.sbomify.com/CVE-2021-21039/index.md","name":"CVE-2021-21039","record":{"aliases":["GHSA-63cg-qxf4-8qfm"],"analysis":{"component_type":"desktop_application","fix_type":"patch","impacts":["code_execution"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"PDF reader","requires_auth":"none","summary":"An attacker can execute arbitrary code by tricking a user into opening a malicious PDF file in Adobe Acrobat Reader.","user_interaction":"required","vuln_class":"use_after_free"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"adobe","cpe":[{"product":"acrobat","vendor":"adobe"},{"product":"acrobat_dc","vendor":"adobe"},{"product":"acrobat_reader","vendor":"adobe"},{"product":"acrobat_reader_dc","vendor":"adobe"}],"cvss":{"score":7.8,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-416","name":"Use After Free"}],"description":"Acrobat Reader DC versions versions 2020.013.20074 (and earlier), 2020.001.30018 (and earlier) and 2017.011.30188 (and earlier) are affected by a Use After Free vulnerability. An unauthenticated attacker could leverage this vulnerability to achieve arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.","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":"Acrobat Reader DC Use-After-Free Vulnerability Could Lead To Arbitrary Code Execution","id":"CVE-2021-21039","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"adobe:acrobat","products":["adobe:acrobat","adobe:acrobat_dc","adobe:acrobat_reader","adobe:acrobat_reader_dc"],"type":"use_after_free","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"Acrobat Reader DC Use-After-Free Vulnerability Could Lead To Arbitrary Code Execution","id":"CVE-2021-21040"},"packages":[],"prev":{"headline":"Acrobat Reader DC Out-Of-Bounds Write Vulnerability Could Lead To Arbitrary Code Execution","id":"CVE-2021-21038"},"products":["Acrobat Reader"],"published":"2021-02-11","related":[{"cvss_score":9.6,"headline":"Adobe Acrobat and Reader Use-After-Free","id":"CVE-2021-28550","kev_date_added":"2021-11-03","published":"2021-09-02"},{"cvss_score":8.8,"headline":"Adobe Acrobat and Reader Heap-based Buffer Overflow","id":"CVE-2021-21017","kev_date_added":"2021-11-03","published":"2021-02-11"},{"cvss_score":8.8,"headline":"Adobe Reader and Acrobat Sandbox Bypass","id":"CVE-2014-0546","kev_date_added":"2022-05-25","published":"2014-08-12"},{"cvss_score":8.8,"headline":"Adobe Reader and Acrobat Use-After-Free","id":"CVE-2014-0496","kev_date_added":"2022-03-03","published":"2014-01-15"},{"cvss_score":8.8,"headline":"Adobe Reader and Acrobat Memory Corruption","id":"CVE-2013-3346","kev_date_added":"2022-03-03","published":"2013-08-30"},{"cvss_score":8.8,"headline":"Adobe Reader and Acrobat Arbitrary Integer Overflow","id":"CVE-2013-2729","kev_date_added":"2022-03-28","published":"2013-05-16"},{"cvss_score":8.8,"headline":"Adobe Reader and Acrobat Universal 3D Memory Corruption","id":"CVE-2011-2462","kev_date_added":"2022-06-08","published":"2011-12-07"}],"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":"2024-09-16","vendors":["Adobe"]},"summary":"An attacker can execute arbitrary code by tricking a user into opening a malicious PDF file in Adobe Acrobat Reader.","url":"https://insights.sbomify.com/CVE-2021-21039/"}