{"cve":"CVE-2021-3973","nvd":{"published":"2021-11-19T12:15:09.260","modified":"2026-10-08T22:17:12.067","status":"Modified","description":"vim is vulnerable to Heap-based Buffer Overflow","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","score":7.8},"cwes":["CWE-122","CWE-787"],"references":["http://www.openwall.com/lists/oss-security/2022/01/15/1","https://github.com/vim/vim/commit/615ddd5342b50a6878a907062aa471740bd9a847","https://huntr.dev/bounties/ce6e8609-77c6-4e17-b9fc-a2e5abed052e","https://lists.debian.org/debian-lts-announce/2022/03/msg00018.html","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FNXY7T5OORA7UJIMGSJBGHFMU6UZWS6P/"],"products":["debian:debian_linux","fedoraproject:fedora","vim:vim"],"source":"nvd","synced_at":"2026-10-19T21:25:41.256909649+00:00"},"epss":{"cve":"CVE-2021-3973","score":0.01786,"percentile":0.78167,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}