---
cve: "CVE-2026-59857"
severity: "MEDIUM"
cvss: 5.6
epss: "11%"
vendor: "vim"
kev: false
exploited: false
published: "2026-07-09 23:17:06"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-16T06:22:32+02:00"
---

# CVE-2026-59857

> 5.6 MEDIUM · 🧪 PoC

## Beschreibung

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.

## CVSS-Vektor

```
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Lokal | good |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |

## Patch verfügbar (OSV)

- d22ff1c955ff87e8273210eae125aab0e85b6c30 (Commit)

## Referenzen

- <https://github.com/vim/vim/security/advisories/GHSA-m3hf-xcm3-xhm2>
- <https://github.com/vim/vim/commit/d22ff1c955ff87e8273210eae125aab0e85b6c30>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-59857) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_