CVE-2026-75819 Out-of-bounds Read in GNU Aspell
An attacker can cause heap memory disclosure or application crash in GNU Aspell by providing a crafted dictionary file.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-75819?
CVE-2026-75819 is a low-severity vulnerability in GNU Aspell, published on 6 Oct 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
GNU Aspell contains an out-of-bounds read vulnerability in ReadOnlyDict::load() in readonly_ws.cpp. When loading a binary .rws dictionary file, it uses offset fields from the file header as byte indices into a heap buffer without validating their bounds. An attacker can trigger this by convincing a user to run aspell with a crafted dictionary file supplied through --master, --dict-dir, or configuration options, leading to heap memory disclosure or a denial of service via application crash.
This issue was fixed in commit 941953b25031bc9104e83f58e138a664b8dedc3f which will be released in version 0.60.8.3.
Weakness: CWE-125
Which versions are affected by CVE-2026-75819?
How do I fix CVE-2026-75819?
Upgrade to a fixed version.
Is CVE-2026-75819 being exploited?
There is no known exploitation of CVE-2026-75819 in the wild and no public exploit code.
Sources
Also known as AZL-105972, BELL-CVE-2026-75819, DEBIAN-CVE-2026-75819, ECHO-a5a6-a855-4b5d, GHSA-5c9p-3r63-49hf, UBUNTU-CVE-2026-75819.