PT-2026-57014 · Vim · Vim

Published 2026-07-09 · Updated 2026-07-09 · CVE-2026-59857

Mitre

CVSS v4.0

5.6

Medium

Base vector

AV:L/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Vim is an open source, command line text editor. Prior to 9.2.0725, the single-byte branch of spell soundfold sal() in src/spell.c translates a word through a spell file's SAL sound-folding rules into a caller-owned result buffer, but its result writes are guarded with reslen < MAXWLEN, allowing reslen to reach MAXWLEN before res[reslen] = NUL writes one byte past the end of the MAXWLEN-element stack buffer. A boundary-length word passed to soundfold(), or reached via sound-based spell suggestion while a SAL-based spell language is active under a non-multibyte 8-bit encoding, can corrupt the eval soundfold() stack frame and crash the editor. This issue is fixed in version 9.2.0725.

Fix

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2026-59857

Affected Products

Vim

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-59857 · Security Note
• https://github.com/vim/vim/security/advisories/GHSA-m3hf-xcm3-xhm2 · Note
• https://github.com/vim/vim/commit/d22ff1c955ff87e8273210eae125aab0e85b6c30 · Note