{"answers":{"affected":"It affects 4 products.","exploited":"Yes. Attackers have exploited CVE-2021-28550 in the wild since at least 3 Nov 2021.","fix":"No fix has been published for CVE-2021-28550 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 17 Nov 2021.","what":"CVE-2021-28550 is a critical use after free vulnerability in Adobe Acrobat, published on 2 Sep 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2021-28550 and fix it if it is affected.\n\nWhat it is: CVE-2021-28550 is a critical use after free vulnerability in Adobe Acrobat, published on 2 Sep 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: Yes. Attackers have exploited CVE-2021-28550 in the wild since at least 3 Nov 2021.\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-2021-28550/ (Markdown: https://insights.sbomify.com/CVE-2021-28550/index.md)","id":"CVE-2021-28550","markdown":"https://insights.sbomify.com/CVE-2021-28550/index.md","name":"CVE-2021-28550","record":{"aliases":["GHSA-865h-4rjv-52pg"],"analysis":{"component_type":"desktop_application","fix_type":"patch","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Adobe Acrobat Reader","requires_auth":"none","summary":"An attacker can execute arbitrary code by tricking a user into opening a malicious 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":9.6,"severity":"critical","source":"cna","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","version":"3.0"},"cwes":[{"id":"CWE-416","name":"Use After Free"}],"description":"Acrobat Reader DC versions versions 2021.001.20150 (and earlier), 2020.001.30020 (and earlier) and 2017.011.30194 (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":"exploited"},"has_fix":null,"headline":"Adobe Acrobat and Reader Use-After-Free","id":"CVE-2021-28550","indexable":true,"kev":{"dateAdded":"2021-11-03","dueDate":"2021-11-17","knownRansomwareCampaignUse":"Unknown","product":"Acrobat and Reader","requiredAction":"Apply updates per vendor instructions.","vendorProject":"Adobe","vulnerabilityName":"Adobe Acrobat and Reader Use-After-Free Vulnerability"},"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":"Adobe Acrobat Pro DC JPEG2000 Editing Out-Of-Bounds Read Remote Code Execution Vulnerability","id":"CVE-2021-28551"},"packages":[],"prev":{"headline":"Adobe Photoshop parsing JS buffer overflow vulnerability could lead to arbitrary code execution","id":"CVE-2021-28549"},"products":["Acrobat Reader"],"published":"2021-09-02","related":[{"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":"open","licence":"CC0 1.0","name":"CISA KEV"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"active","technical_impact":"total"},"state":"PUBLISHED","updated":"2025-10-21","vendors":["Adobe"]},"summary":"An attacker can execute arbitrary code by tricking a user into opening a malicious file in Adobe Acrobat Reader.","url":"https://insights.sbomify.com/CVE-2021-28550/"}