CVE-2021-3984
Heap-based Buffer Overflow in vim/vim
02 Description
Heap-based Buffer Overflow in vim/vim
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 1.57% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 74.8% of scored records. A rank, not a probability.
- NVD base score
- 7.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2021-12-01 00:00Z4 YR AGO
- Last updated
- 2024-08-03 17:09Z2 YR AGO
- Reserved
- 2021-11-19
- Assigning CNA
- @huntrdev
- Record state
- PUBLISHED
- Severity
- High (CVSS 7.3)
- CNA CVSS vector
- CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:H
- Weaknesses
- Data version
- 5.1
- Document digest
- 9a8dbab07e43e1be836bb33f90e8d6bd4713df3448b5ad042d7cec695a454640
05 Affected products
06 References
- huntr.devhttps://huntr.dev/bounties/b114b5a2-18e2-49f0-b350-15994d71426a
- github.comhttps://github.com/vim/vim/commit/2de9b7c7c8791da8853a9a7ca9c467867465b655
- lists.fedoraproject.orgFEDORA-2021-b0ac29efb1https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FNXY7T5OORA7UJIMGSJBGHFMU6UZWS6P/
- www.openwall.com[oss-security] 20220114 Re: 3 new CVE's in vimhttp://www.openwall.com/lists/oss-security/2022/01/15/1
- lists.debian.org[debian-lts-announce] 20220311 [SECURITY] [DLA 2947-1] vim security updatehttps://lists.debian.org/debian-lts-announce/2022/03/msg00018.html
- security.gentoo.orgGLSA-202208-32https://security.gentoo.org/glsa/202208-32
- lists.debian.org[debian-lts-announce] 20221108 [SECURITY] [DLA 3182-1] vim security updatehttps://lists.debian.org/debian-lts-announce/2022/11/msg00009.html
07 Fixed in
AlmaLinux 8
- vim-X11 Fixed in 2:8.0.1763-16.el8_5.13
- vim-common Fixed in 2:8.0.1763-16.el8_5.13
- vim-enhanced Fixed in 2:8.0.1763-16.el8_5.13
- vim-filesystem Fixed in 2:8.0.1763-16.el8_5.13
- vim-minimal Fixed in 2:8.0.1763-16.el8_5.13
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
Arch Linux
- gvim Fixed in 8.2.3741-1
- vim Fixed in 8.2.3741-1
Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.
CloudLinux 8
- vim-X11 Fixed in 2:8.0.1763-16.el8_5.13
- vim-common Fixed in 2:8.0.1763-16.el8_5.13
- vim-enhanced Fixed in 2:8.0.1763-16.el8_5.13
- vim-filesystem Fixed in 2:8.0.1763-16.el8_5.13
- vim-minimal Fixed in 2:8.0.1763-16.el8_5.13
Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.
Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
Debian 12
- vim Fixed in 2:8.2.3995-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- vim Fixed in 2:8.2.3995-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- vim Fixed in 2:8.2.3995-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- vim Fixed in 2:8.0.1453-1ubuntu1.8
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 20.04 LTS
- vim Fixed in 2:8.1.2269-1ubuntu5.6
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 14.04 LTS
- vim Fixed in 2:7.4.052-1ubuntu3.1+esm17Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 16.04 LTS
- vim Fixed in 2:7.4.1689-3ubuntu1.5+esm4Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.