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CVE-2026-28420

Vim has Heap-based Buffer Overflow and OOB Read in :terminal

CVSS 4.4 MEDIUMEPSS 0.2%CWE-122CWE-125
Vexday Risk Score
13Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS 4.4EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —
Lifecycle
27 Feb 2026Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
Vim is an open source, command line text editor. Prior to version 9.2.0076, a heap-based buffer overflow WRITE and an out-of-bounds READ exist in Vim's terminal emulator when processing maximum combining characters from Unicode supplementary planes. Version 9.2.0076 fixes the issue.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L
Affected products
vim · vim

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References
https://github.com/vim/vim/commit/bb6de2105b160e729c34063https://github.com/vim/vim/releases/tag/v9.2.0076https://github.com/vim/vim/security/advisories/GHSA-rvj2-jrf9-2phghttp://www.openwall.com/lists/oss-security/2026/02/27/9