VulnerabilityAnalyzed
CVE-2026-28421
Versions prior to 9.2.0077 have a heap-buffer-overflow and a segmentation fault (SEGV) exist in Vim's swap file recovery logic.
HIGH 7.8EPSS 0.18%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.18%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Vim is an open source, command line text editor. Versions prior to 9.2.0077 have a heap-buffer-overflow and a segmentation fault (SEGV) exist in Vim's swap file recovery logic. Both are caused by unvalidated fields read from crafted pointer blocks within a swap file. Version 9.2.0077 fixes the issue.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 0.18% probability · 7th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-20, CWE-122
- Affected
- vim/vim
- Source
- security-advisories@github.com
References
- https://github.com/vim/vim/commit/65c1a143c331c886dc28Patch
- https://github.com/vim/vim/releases/tag/v9.2.0077Product
- https://github.com/vim/vim/security/advisories/GHSA-r2gw-2x48-jj5pPatch, Vendor Advisory
- http://www.openwall.com/lists/oss-security/2026/02/27/10Mailing List, Patch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.