{"answers":{"affected":"It affects 2 products.","exploited":"There is no known exploitation of CVE-2021-3968 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2021-3968 is a high-severity memory corruption vulnerability in Fedoraproject Fedora, published on 19 Nov 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2021-3968 and fix it if it is affected.\n\nWhat it is: CVE-2021-3968 is a high-severity memory corruption vulnerability in Fedoraproject Fedora, published on 19 Nov 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2021-3968 in the wild and no public exploit code.\n\nAffected product: Fedoraproject Fedora. 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-2021-3968/ (Markdown: https://insights.sbomify.com/CVE-2021-3968/index.md)","id":"CVE-2021-3968","markdown":"https://insights.sbomify.com/CVE-2021-3968/index.md","name":"CVE-2021-3968","record":{"aliases":["ALPINE-CVE-2021-3968","AZL-6945","DEBIAN-CVE-2021-3968","GHSA-p5c5-45cp-hjw4"],"analysis":{"component_type":"desktop_application","fix_type":"patch","impacts":["code_execution","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Vim text editor","requires_auth":"low_privilege","summary":"A heap-based buffer overflow in Vim allows attackers to execute arbitrary code or cause a denial of service via crafted input.","user_interaction":"required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"@huntrdev","cpe":[{"product":"fedora","vendor":"fedoraproject"},{"product":"vim","vendor":"vim"}],"cvss":{"score":8,"severity":"high","source":"cna","vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H","version":"3.0"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"},{"id":"CWE-122","name":"Heap-based Buffer Overflow"}],"description":"vim is vulnerable to Heap-based Buffer Overflow","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Heap-based Buffer Overflow in vim/vim","id":"CVE-2021-3968","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"fedoraproject:fedora","products":["fedoraproject:fedora","vim:vim"],"type":"memory_corruption","year":"2021"},"n_packages":0,"n_references":6,"next":{"headline":"Race condition in IMController","id":"CVE-2021-3969"},"packages":[],"prev":{"headline":"Improper Access Control in zulip/zulip","id":"CVE-2021-3967"},"products":["vim/vim"],"published":"2021-11-19","related":[{"cvss_score":9.8,"headline":"PHP-CGI OS Command Injection","id":"CVE-2024-4577","kev_date_added":"2024-06-12","published":"2024-06-09"},{"cvss_score":9.8,"headline":"Grafana Authentication Bypass","id":"CVE-2021-39226","kev_date_added":"2022-08-25","published":"2021-10-05"},{"cvss_score":9.8,"headline":"VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow","id":"CVE-2019-5544","kev_date_added":"2021-11-03","published":"2019-12-06"},{"cvss_score":9.6,"headline":"Google Chromium V8 Type Confusion","id":"CVE-2024-4947","kev_date_added":"2024-05-20","published":"2024-05-15"},{"cvss_score":9.6,"headline":"Google Chromium Visuals Use-After-Free","id":"CVE-2024-4671","kev_date_added":"2024-05-13","published":"2024-05-09"},{"cvss_score":9.6,"headline":"Google Chromium Mojo Insufficient Data Validation","id":"CVE-2022-3075","kev_date_added":"2022-09-08","published":"2022-09-26"},{"cvss_score":9.6,"headline":"Google Chromium Indexed DB API Use-After-Free","id":"CVE-2021-30633","kev_date_added":"2021-11-03","published":"2021-10-08"}],"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":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-10-08","vendors":["vim"]},"summary":"A heap-based buffer overflow in Vim allows attackers to execute arbitrary code or cause a denial of service via crafted input.","url":"https://insights.sbomify.com/CVE-2021-3968/"}