{"id":"CVE-2021-3928","title":"vim is vulnerable to Use of Uninitialized Variable","summary":"vim is vulnerable to Use of Uninitialized Variable","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-457","CWE-908"],"vendor":"vim","product":"vim","affected":["vim < 8.2.3582","fedora = 33","fedora = 34","fedora = 35","debian_linux = 9.0","debian_linux = 10.0"],"patched":["vim 8.2.3582"],"published":"2021-11-05","updated":"2026-10-08","sourceUpdated":"2026-10-08T22:17:11.720","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2021-3928","references":[{"url":"http://www.openwall.com/lists/oss-security/2022/01/15/1","label":"security@huntr.dev"},{"url":"https://github.com/vim/vim/commit/15d9890eee53afc61eb0a03b878a19cb5672f732","label":"security@huntr.dev"},{"url":"https://huntr.dev/bounties/29c3ebd2-d601-481c-bf96-76975369d0cd","label":"security@huntr.dev"},{"url":"https://lists.debian.org/debian-lts-announce/2022/03/msg00018.html","label":"security@huntr.dev"},{"url":"https://lists.debian.org/debian-lts-announce/2022/11/msg00009.html","label":"security@huntr.dev"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BCQWPEY2AEYBELCMJYHYWYCD3PZVD2H7/","label":"security@huntr.dev"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FNXY7T5OORA7UJIMGSJBGHFMU6UZWS6P/","label":"security@huntr.dev"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PGW56Z6IN4UVM3E5RXXF4G7LGGTRBI5C/","label":"security@huntr.dev"},{"url":"https://security.gentoo.org/glsa/202208-32","label":"security@huntr.dev"},{"url":"http://www.openwall.com/lists/oss-security/2022/01/15/1","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/vim/vim/commit/15d9890eee53afc61eb0a03b878a19cb5672f732","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://huntr.dev/bounties/29c3ebd2-d601-481c-bf96-76975369d0cd","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2022/03/msg00018.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2022/11/msg00009.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BCQWPEY2AEYBELCMJYHYWYCD3PZVD2H7/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FNXY7T5OORA7UJIMGSJBGHFMU6UZWS6P/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PGW56Z6IN4UVM3E5RXXF4G7LGGTRBI5C/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.gentoo.org/glsa/202208-32","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd"],"epss":0.00635,"epssPercentile":0.48843,"ingestedAt":"2026-10-08T23:16:47.324Z","slug":"CVE-2021-3928","body":"## Overview\n\nvim is vulnerable to Use of Uninitialized Variable\n\n## Affected\n\n- `vim < 8.2.3582`\n- `fedora = 33`\n- `fedora = 34`\n- `fedora = 35`\n- `debian_linux = 9.0`\n- `debian_linux = 10.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `vim 8.2.3582`","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}