CVE-2021-3903

HIGH

Vim < 8.2.3564 - Out-of-Bounds Write

Title source: rule

Description

vim is vulnerable to Heap-based Buffer Overflow

Exploits (1)

github WRITEUP 3 stars

by cemonatk · poc

https://github.com/cemonatk/onefuzzyway/tree/main/CVEs/vim/CVE-2021-3903.md

View Code ZIP pw:eip

References (7)

[Mailing List, Third Party Advisory] http://www.openwall.com/lists/oss-security/2022/01/15/1

[Patch, Third Party Advisory] https://github.com/vim/vim/commit/777e7c21b7627be80961848ac560cb0a9978ff43

View Patch ZIP pw:eip

[Exploit, Issue Tracking, Patch, Third Party Advisory] https://huntr.dev/bounties/35738a4f-55ce-446c-b836-2fb0b39625f8

[Mailing List, Third Party Advisory] https://lists.debian.org/debian-lts-announce/2022/06/msg00014.html

[Mailing List, Third Party Advisory] https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BN4EX7BPQU7RP6PXCNCSDORUZBXQ4JUH/

[Mailing List, Third Party Advisory] https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DU26T75PYA3OF7XJGNKMT2ZCQEU4UKP5/

[Mailing List, Third Party Advisory] https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FNXY7T5OORA7UJIMGSJBGHFMU6UZWS6P/

Scores

CVSS v3 7.8

EPSS 0.0037

EPSS Percentile 58.3%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Classification

CWE

CWE-122 CWE-787

Status published

Affected Products (5)

vim/vim < 8.2.3564

fedoraproject/fedora

fedoraproject/fedora

fedoraproject/fedora

debian/debian_linux

Timeline

Published Oct 27, 2021

Tracked Since Feb 18, 2026