Log in Start free

Vulnerability · Published Oct 6, 2026 · Assigned by CERT-PL

CVE-2026-75820Integer Truncation Leading to Heap Corruption in GNU Aspell

Low 1.8

In plain English

A low-severity integer overflow in Aspell from GNU. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 3% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)1.8Low
Exploit odds (30 days)0.1%top 97.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

GNU Aspell contains an integer truncation vulnerability in the WritableDict::add() function in modules/speller/default/writable.cpp. When loading a personal wordlist, the word length is stored as a single byte, causing truncation for words whose length is a multiple of 256. This leads to heap corruption. An attacker can exploit this by convincing a user to run aspell with a crafted personal wordlist containing such a word, resulting in denial of service. This issue was fixed in commit 782ce94e4dc71eaec4ee1bd945eb3b9c47c5387d which will be released in version 0.60.8.3.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12aspellno fix listedDEBIAN-CVE-2026-75820
Debian:13aspellno fix listedDEBIAN-CVE-2026-75820
Debian:14aspell0.60.8.2-4DEBIAN-CVE-2026-75820
Ubuntu:22.04:LTSaspellno fix listedUBUNTU-CVE-2026-75820
Ubuntu:24.04:LTSaspellno fix listedUBUNTU-CVE-2026-75820
Ubuntu:26.04:LTSaspellno fix listedUBUNTU-CVE-2026-75820
Ubuntu:26.10aspellno fix listedUBUNTU-CVE-2026-75820

Affected products (as reported)

VendorProductVersions
GNU Aspell 0 – before 0.60.8.3

Weakness: CWE-190 · Vector: CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:L/SA:N

References