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

Description (CNA)

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 (CNA)

Vendor / product	Versions
GNU / Aspell	affected 0 before 0.60.8.3

CWE

CWE-190

References

https://cert.pl/en/posts/2026/10/CVE-2026-75818
http://aspell.net/

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.