CVE-2021-4019
What it is
vim is vulnerable to Heap-based Buffer Overflow
At a glance
- Exploitability
- Can be exploited locally on the machine without logging in, but needs a user to act. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 1.9% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 1.9% in the next 30 days (EPSS).
- Severity: 7.8 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 1.9% · EPSS, next 30 days
- Weakness
- CWE-122
- Record status
- Analyzed
Affected
- Neovim < 0.7.0
- Vim < 8.2.3669
- Fedoraproject Fedora 34
- Fedoraproject Fedora 35
- Debian Linux 9.0
- Debian Linux 10.0
- Debian Linux 11.0
Attack profile CVSS 3.1 · 7.8
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2021-4019.md and follow it. Check whether this project is affected by CVE-2021-4019. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://github.com/vim/vim/commit/bd228fd097b41a798f90944b5d1245eddd484142
- https://github.com/vim/vim/commit/bd228fd097b41a798f90944b5d1245eddd484142
References
- http://www.openwall.com/lists/oss-security/2022/01/15/1
- https://github.com/vim/vim/commit/bd228fd097b41a798f90944b5d1245eddd484142
- https://huntr.dev/bounties/d8798584-a6c9-4619-b18f-001b9a6fca92
- https://lists.debian.org/debian-lts-announce/2022/03/msg00018.html
- https://lists.debian.org/debian-lts-announce/2022/11/msg00009.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DRPAI5JVZLI7WHWSBR6NWAPBQAYUQREW/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FNXY7T5OORA7UJIMGSJBGHFMU6UZWS6P/
- https://security.gentoo.org/glsa/202208-32
- http://www.openwall.com/lists/oss-security/2022/01/15/1
- https://github.com/vim/vim/commit/bd228fd097b41a798f90944b5d1245eddd484142
- https://huntr.dev/bounties/d8798584-a6c9-4619-b18f-001b9a6fca92
- https://lists.debian.org/debian-lts-announce/2022/03/msg00018.html
- https://lists.debian.org/debian-lts-announce/2022/11/msg00009.html
- https://lists.debian.org/debian-lts-announce/2025/03/msg00023.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DRPAI5JVZLI7WHWSBR6NWAPBQAYUQREW/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FNXY7T5OORA7UJIMGSJBGHFMU6UZWS6P/
- https://security.gentoo.org/glsa/202208-32