CVE-2026-25749
Vim vulnerability analysis and mitigation

Vim is an open source, command line text editor. Prior to version 9.1.2132, a heap buffer overflow vulnerability exists in Vim's tag file resolution logic when processing the 'helpfile' option. The vulnerability is located in the get_tagfname() function in src/tag.c. When processing help file tags, Vim copies the user-controlled 'helpfile' option value into a fixed-size heap buffer of MAXPATHL + 1 bytes (typically 4097 bytes) using an unsafe STRCPY() operation without any bounds checking. This issue has been patched in version 9.1.2132.


SourceNVD

Related Vim vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2026-34714HIGH8.6
  • VimVim
  • vim-enhanced-debuginfo
NoYesMar 30, 2026
CVE-2026-34982HIGH8.2
  • VimVim
  • vim-debugsource
NoYesApr 06, 2026
CVE-2026-33412HIGH7.3
  • VimVim
  • vim-data-common
NoYesMar 24, 2026
CVE-2026-39881MEDIUM5
  • VimVim
  • vim-minimal
NoYesApr 08, 2026
CVE-2026-35177MEDIUM4.1
  • VimVim
  • vim-debuginfo
NoYesApr 06, 2026

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