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CVE-2021-3973
Heap-based Buffer Overflow in vim/vim
High7.3EPSS 1.8%
- Published
- Updated
- Reserved
- Assigned by
- @huntrdev
Description
vim is vulnerable to Heap-based Buffer Overflow
Timeline
ID reserved
By @huntrdev
- 2 days later
· 2 days later
Published
- 5 years later
· 5 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| @huntrdevCNA (assigner) | 3.0 | High7.3 | CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:H |
| NVDNVD · Modified | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 1.8% · top 21% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.3.
Weakness
Affected products
References (7)
- https://huntr.dev/bounties/ce6e8609-77c6-4e17-b9fc-a2e5abed052e (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://github.com/vim/vim/commit/615ddd5342b50a6878a907062aa471740bd9a847 (opens in a new tab)x_refsource_MISCx_transferred
- FEDORA-2021-5cd9df120e (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- FEDORA-2021-b0ac29efb1 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- [oss-security] 20220114 Re: 3 new CVE's in vim (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [debian-lts-announce] 20220311 [SECURITY] [DLA 2947-1] vim security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- GLSA-202208-32 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2021-3973)Record last updated .