CVE-2026-75820

Integer Truncation Leading to Heap Corruption in GNU Aspell

CVE-2026-75820 is fixed in 4 products on 1 platform, first by DEBIAN-CVE-2026-75820, released November 1, 2026. It is not reported as exploited. Patch Radar priority: Routine.

Routine

CVSS

n/a

Low

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0013

2nd percentile

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.

Where it's fixed

Product	Fixed in	Fix	Released
Linux
aspell · Debian 14	0.60.8.2-4	DEBIAN-CVE-2026-75820	Nov 1, 2026
aspell · amzn 2023	12:0.60.8-7.amzn2023.0.3	ALAS2023-2026-3275	Nov 7, 2026
aspell-debuginfo · amzn 2023	12:0.60.8-7.amzn2023.0.3	ALAS2023-2026-3275	Nov 7, 2026
aspell-debugsource · amzn 2023	12:0.60.8-7.amzn2023.0.3	ALAS2023-2026-3275	Nov 7, 2026
aspell-devel · amzn 2023	12:0.60.8-7.amzn2023.0.3	ALAS2023-2026-3275	Nov 7, 2026

Details

Published
October 6, 2026
Weakness
Integer Overflow or Wraparound
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-75820

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