---
id: CVE-2026-75818
title: >-
  GNU Aspell prezip-bin contains a heap-based buffer overflow vulnerability in
  the decompressor in prog/prezip.c
summary: >-
  GNU Aspell prezip-bin contains a heap-based buffer overflow vulnerability in
  the decompressor in prog/prezip.c. The decompressor does not properly check
  buffer space, so a crafted compressed file can cause out-of-bounds read and
  write op…
severity: low
cvss: 1.8
cvssVector: 'CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:L/SI:L/SA:N'
cwe:
  - CWE-122
vendor: GNU
product: Aspell
affected:
  - Aspell < 0.60.8.3
published: '2026-10-06'
updated: '2026-10-06'
sourceUpdated: '2026-10-06T11:17:29.730'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-75818'
references:
  - url: 'http://aspell.net/'
    label: cvd@cert.pl
  - url: 'https://cert.pl/en/posts/2026/10/CVE-2026-75818'
    label: cvd@cert.pl
tags:
  - nvd
  - cve.org
cvssSource: cna
ingestedAt: '2026-10-06T11:57:26.913Z'
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-06T12:50:34.738213Z'
---

## Overview

GNU Aspell prezip-bin contains a heap-based buffer overflow vulnerability in the decompressor in prog/prezip.c. The decompressor does not properly check buffer space, so a crafted compressed file can cause out-of-bounds read and write operations on the heap. An attacker who convinces a user to process a malicious compressed file with prezip-bin can trigger memory corruption, leading to a processs crash.



This issue was fixed in commit 15b188437f9e0192d4ac4472ad66a4e2f62a782f which will be released in version 0.60.8.3.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.