CVE-2021-3903
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
- 0.64% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 50.8% 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:L/UI:N/S:U/C:H/I:H/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Low. 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
- 2021-10-27 21:00Z5 YR AGO
- Last updated
- 2024-08-03 17:09Z2 YR AGO
- Reserved
- 2021-10-25
- 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
- b90586f08624c366078b54de80af42b75271ac37469d006374a4a43a03db3b9b
05 Affected products
06 References
- huntr.devhttps://huntr.dev/bounties/35738a4f-55ce-446c-b836-2fb0b39625f8
- github.comhttps://github.com/vim/vim/commit/777e7c21b7627be80961848ac560cb0a9978ff43
- lists.fedoraproject.orgFEDORA-2021-af135cabe2https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DU26T75PYA3OF7XJGNKMT2ZCQEU4UKP5/
- lists.fedoraproject.orgFEDORA-2021-a5e55a9e02https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BN4EX7BPQU7RP6PXCNCSDORUZBXQ4JUH/
- 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] 20220620 [SECURITY] [DLA 3053-1] vim security updatehttps://lists.debian.org/debian-lts-announce/2022/06/msg00014.html
07 Fixed in
AlmaLinux 9
- vim-X11 Fixed in 2:8.2.2637-21.el9
- vim-common Fixed in 2:8.2.2637-21.el9
- vim-enhanced Fixed in 2:8.2.2637-21.el9
- vim-filesystem Fixed in 2:8.2.2637-21.el9
- vim-minimal Fixed in 2:8.2.2637-21.el9
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 8.2.3582-1
- vim Fixed in 8.2.3582-1
Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.
CloudLinux 9
- vim-X11 Fixed in 2:8.2.2637-21.el9
- vim-common Fixed in 2:8.2.2637-21.el9
- vim-enhanced Fixed in 2:8.2.2637-21.el9
- vim-filesystem Fixed in 2:8.2.2637-21.el9
- vim-minimal Fixed in 2:8.2.2637-21.el9
Derived from AlmaLinux 9. Partial coverage: only packages taken from AlmaLinux 9 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 2:8.2.3565-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- vim Fixed in 2:8.2.3565-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- vim Fixed in 2:8.2.3565-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- vim Fixed in 2:8.0.1453-1ubuntu1.7
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 2:8.1.2269-1ubuntu5.4
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 22.04 LTS
- vim Fixed in 2:8.2.3565-1ubuntu2
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+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.
Ubuntu Pro 16.04 LTS
- vim Fixed in 2:7.4.1689-3ubuntu1.5+esm3Available 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.