Home/CVE/Vim is an open source, command line text editor. Versions prior to 9.2.0077 have a heap-buffer-overflow and a segmentati
CVE

CVE-2026-28421

Vim is an open source, command line text editor. Versions prior to 9.2.0077 have a heap-buffer-overflow and a segmentati

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.

MEDIUM · CVSS 5.3 EPSS 0.00012
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-122Heap-based Buffer Overflow
CWE-20Improper Input Validation
▤

Affected Products & Versions

1
vim< 9.2.0077
▣

Scoring & Timeline

5.3
MEDIUM · CVSS v3.1 · security-advisories@github.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD27 Feb 2026 · 10:16 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

30
rhsaRHSA-2026:16009Moderate
rhsaRHSA-2026:16008Moderate
rhsaRHSA-2026:14773Important
rhsaRHSA-2026:15087Important
rhsaRHSA-2026:16174Important
🔗

References & Sources

4
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
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-jj5pPatchVendor Advisory
http://www.openwall.com/lists/oss-security/2026/02/27/10Mailing ListPatchThird Party Advisory
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