{"answers":{"affected":"It affects 3 products.","exploited":"There is no known exploitation of CVE-2021-3903 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2021-3903 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 27 Oct 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-2021-3903 and fix it if it is affected.\n\nWhat it is: CVE-2021-3903 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 27 Oct 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-2021-3903 in the wild and no public exploit code.\n\nAffected product: Debian Debian Linux. 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-2021-3903/ (Markdown: https://insights.sbomify.com/CVE-2021-3903/index.md)","id":"CVE-2021-3903","markdown":"https://insights.sbomify.com/CVE-2021-3903/index.md","name":"CVE-2021-3903","record":{"aliases":["ALPINE-CVE-2021-3903","ALSA-2024:9405","CLSA-2025-1737024110","DEBIAN-CVE-2021-3903","GHSA-xc29-p9xx-c3j9","OESA-2021-1421","RHSA-2024:9405","RLSA-2024:9405","UBUNTU-CVE-2021-3903"],"analysis":{"component_type":"desktop_application","fix_type":"patch","impacts":["code_execution","denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Vim text editor","requires_auth":"none","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":"debian_linux","vendor":"debian"},{"product":"fedora","vendor":"fedoraproject"},{"product":"vim","vendor":"vim"}],"cvss":{"score":7.3,"severity":"high","source":"cna","vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/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":["AlmaLinux:9","Red Hat:enterprise_linux:9::appstream","Red Hat:enterprise_linux:9::baseos","Rocky Linux:9"],"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-2021-3903","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"debian:debian_linux","products":["debian:debian_linux","fedoraproject:fedora","vim:vim"],"type":"memory_corruption","year":"2021"},"n_packages":24,"n_references":7,"next":{"headline":"Cross-site Scripting (XSS) - Stored in getgrav/grav","id":"CVE-2021-3904"},"packages":[{"ecosystem":"AlmaLinux:9","fixed":["2:8.2.2637-21.el9"],"introduced":["0"],"last_affected":[],"package":"vim-X11","purl":"pkg:rpm/almalinux/vim-X11","source":"ALSA-2024:9405"},{"ecosystem":"AlmaLinux:9","fixed":["2:8.2.2637-21.el9"],"introduced":["0"],"last_affected":[],"package":"vim-common","purl":"pkg:rpm/almalinux/vim-common","source":"ALSA-2024:9405"},{"ecosystem":"AlmaLinux:9","fixed":["2:8.2.2637-21.el9"],"introduced":["0"],"last_affected":[],"package":"vim-enhanced","purl":"pkg:rpm/almalinux/vim-enhanced","source":"ALSA-2024:9405"},{"ecosystem":"AlmaLinux:9","fixed":["2:8.2.2637-21.el9"],"introduced":["0"],"last_affected":[],"package":"vim-filesystem","purl":"pkg:rpm/almalinux/vim-filesystem","source":"ALSA-2024:9405"},{"ecosystem":"AlmaLinux:9","fixed":["2:8.2.2637-21.el9"],"introduced":["0"],"last_affected":[],"package":"vim-minimal","purl":"pkg:rpm/almalinux/vim-minimal","source":"ALSA-2024:9405"},{"ecosystem":"Red Hat:enterprise_linux:9::appstream","fixed":["2:8.2.2637-21.el9"],"introduced":["0"],"last_affected":[],"package":"vim-X11","purl":"pkg:rpm/redhat/vim-X11","source":"RHSA-2024:9405"},{"ecosystem":"Red Hat:enterprise_linux:9::appstream","fixed":["2:8.2.2637-21.el9"],"introduced":["0"],"last_affected":[],"package":"vim-X11-debuginfo","purl":"pkg:rpm/redhat/vim-X11-debuginfo","source":"RHSA-2024:9405"},{"ecosystem":"Red Hat:enterprise_linux:9::appstream","fixed":["2:8.2.2637-21.el9"],"introduced":["0"],"last_affected":[],"package":"vim-common","purl":"pkg:rpm/redhat/vim-common","source":"RHSA-2024:9405"},{"ecosystem":"Red Hat:enterprise_linux:9::appstream","fixed":["2:8.2.2637-21.el9"],"introduced":["0"],"last_affected":[],"package":"vim-common-debuginfo","purl":"pkg:rpm/redhat/vim-common-debuginfo","source":"RHSA-2024:9405"},{"ecosystem":"Red Hat:enterprise_linux:9::appstream","fixed":["2:8.2.2637-21.el9"],"introduced":["0"],"last_affected":[],"package":"vim-debuginfo","purl":"pkg:rpm/redhat/vim-debuginfo","source":"RHSA-2024:9405"},{"ecosystem":"Red Hat:enterprise_linux:9::appstream","fixed":["2:8.2.2637-21.el9"],"introduced":["0"],"last_affected":[],"package":"vim-debugsource","purl":"pkg:rpm/redhat/vim-debugsource","source":"RHSA-2024:9405"},{"ecosystem":"Red Hat:enterprise_linux:9::appstream","fixed":["2:8.2.2637-21.el9"],"introduced":["0"],"last_affected":[],"package":"vim-enhanced","purl":"pkg:rpm/redhat/vim-enhanced","source":"RHSA-2024:9405"},{"ecosystem":"Red Hat:enterprise_linux:9::appstream","fixed":["2:8.2.2637-21.el9"],"introduced":["0"],"last_affected":[],"package":"vim-enhanced-debuginfo","purl":"pkg:rpm/redhat/vim-enhanced-debuginfo","source":"RHSA-2024:9405"},{"ecosystem":"Red Hat:enterprise_linux:9::appstream","fixed":["2:8.2.2637-21.el9"],"introduced":["0"],"last_affected":[],"package":"vim-minimal-debuginfo","purl":"pkg:rpm/redhat/vim-minimal-debuginfo","source":"RHSA-2024:9405"},{"ecosystem":"Red Hat:enterprise_linux:9::baseos","fixed":["2:8.2.2637-21.el9"],"introduced":["0"],"last_affected":[],"package":"vim","purl":"pkg:rpm/redhat/vim","source":"RHSA-2024:9405"},{"ecosystem":"Red Hat:enterprise_linux:9::baseos","fixed":["2:8.2.2637-21.el9"],"introduced":["0"],"last_affected":[],"package":"vim-X11-debuginfo","purl":"pkg:rpm/redhat/vim-X11-debuginfo","source":"RHSA-2024:9405"},{"ecosystem":"Red Hat:enterprise_linux:9::baseos","fixed":["2:8.2.2637-21.el9"],"introduced":["0"],"last_affected":[],"package":"vim-common-debuginfo","purl":"pkg:rpm/redhat/vim-common-debuginfo","source":"RHSA-2024:9405"},{"ecosystem":"Red Hat:enterprise_linux:9::baseos","fixed":["2:8.2.2637-21.el9"],"introduced":["0"],"last_affected":[],"package":"vim-debuginfo","purl":"pkg:rpm/redhat/vim-debuginfo","source":"RHSA-2024:9405"},{"ecosystem":"Red Hat:enterprise_linux:9::baseos","fixed":["2:8.2.2637-21.el9"],"introduced":["0"],"last_affected":[],"package":"vim-debugsource","purl":"pkg:rpm/redhat/vim-debugsource","source":"RHSA-2024:9405"},{"ecosystem":"Red Hat:enterprise_linux:9::baseos","fixed":["2:8.2.2637-21.el9"],"introduced":["0"],"last_affected":[],"package":"vim-enhanced-debuginfo","purl":"pkg:rpm/redhat/vim-enhanced-debuginfo","source":"RHSA-2024:9405"},{"ecosystem":"Red Hat:enterprise_linux:9::baseos","fixed":["2:8.2.2637-21.el9"],"introduced":["0"],"last_affected":[],"package":"vim-filesystem","purl":"pkg:rpm/redhat/vim-filesystem","source":"RHSA-2024:9405"},{"ecosystem":"Red Hat:enterprise_linux:9::baseos","fixed":["2:8.2.2637-21.el9"],"introduced":["0"],"last_affected":[],"package":"vim-minimal","purl":"pkg:rpm/redhat/vim-minimal","source":"RHSA-2024:9405"},{"ecosystem":"Red Hat:enterprise_linux:9::baseos","fixed":["2:8.2.2637-21.el9"],"introduced":["0"],"last_affected":[],"package":"vim-minimal-debuginfo","purl":"pkg:rpm/redhat/vim-minimal-debuginfo","source":"RHSA-2024:9405"},{"ecosystem":"Rocky Linux:9","fixed":["2:8.2.2637-21.el9"],"introduced":["0"],"last_affected":[],"package":"vim","purl":"pkg:rpm/rocky-linux/vim?distro=rocky-linux-9\u0026epoch=2","source":"RLSA-2024:9405"}],"prev":{"headline":"Improper Restriction of XML External Entity Reference in dompdf/dompdf","id":"CVE-2021-3902"},"products":["vim/vim"],"published":"2021-10-27","related":[{"cvss_score":10,"headline":"ProFTPD Improper Access Control","id":"CVE-2015-3306","kev_date_added":"2026-10-08","published":"2015-05-18"},{"cvss_score":9.9,"headline":"RoundCube Webmail Deserialization of Untrusted Data","id":"CVE-2025-49113","kev_date_added":"2026-02-20","published":"2025-06-02"},{"cvss_score":9.8,"headline":"GNU InetUtils Argument Injection","id":"CVE-2026-24061","kev_date_added":"2026-01-26","published":"2026-01-21"},{"cvss_score":9.8,"headline":"Linux Kernel Improper Check for Unusual or Exceptional Conditions","id":"CVE-2025-39682","kev_date_added":"2026-09-18","published":"2025-09-05"},{"cvss_score":9.8,"headline":"Mozilla Firefox Use-After-Free","id":"CVE-2024-9680","kev_date_added":"2024-10-15","published":"2024-10-09"},{"cvss_score":9.8,"headline":"RARLAB UnRAR Directory Traversal","id":"CVE-2022-30333","kev_date_added":"2022-08-09","published":"2022-05-09"},{"cvss_score":9.8,"headline":"Roundcube Webmail SQL Injection","id":"CVE-2021-44026","kev_date_added":"2023-06-22","published":"2021-11-19"}],"sources":[{"class":"attribution","licence":"MIT","name":"AlmaLinux","prefix":"ALSA"},{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"Red Hat","prefix":"RHSA"},{"class":"attribution","licence":"BSD","name":"Rocky Linux","prefix":"RLSA"},{"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":["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-2021-3903/"}