{"schemaVersion":3,"id":"CVE-2026-25749","aliases":["ALPINE-CVE-2026-25749","RHSA-2026:4442","RHSA-2026:4715","RHSA-2026:5602","UBUNTU-CVE-2026-25749","DEBIAN-CVE-2026-25749"],"status":"published","duplicateOf":null,"title":null,"description":"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. 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