CVSS 3.1
6.6 mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:HCVE-2026-25749
Medium (6.6). EPSS 0.3% chance of exploitation in the next 30 days.
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.
Severity
- EPSS
- 0.3% chance of exploitation in the next 30 days; higher than 18% of CVEs (scores of 2026-10-31)
- CWE
- CWE-122
- Published
- Modified
- Record from
- the NVD, synced
Affected
- neovim:neovim
- vim:vim