{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-75820","assignerOrgId":"4bb8329e-dd38-46c1-aafb-9bf32bcb93c6","state":"PUBLISHED","assignerShortName":"CERT-PL","dateReserved":"2026-08-18T10:13:29.246Z","datePublished":"2026-10-06T10:57:59.621Z","dateUpdated":"2026-10-06T12:49:39.265Z"},"containers":{"cna":{"providerMetadata":{"orgId":"4bb8329e-dd38-46c1-aafb-9bf32bcb93c6","shortName":"CERT-PL","dateUpdated":"2026-10-06T10:57:59.621Z"},"title":"Integer Truncation Leading to Heap Corruption in GNU Aspell","problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-190","description":"CWE-190 Integer Overflow or Wraparound","type":"CWE"}]}],"affected":[{"vendor":"GNU","product":"Aspell","repo":"https://github.com/GNUAspell/aspell","modules":["WritableDict::add()"],"programFiles":["modules/speller/default/writable.cpp"],"versions":[{"status":"affected","version":"0","lessThan":"0.60.8.3","versionType":"semver"}],"defaultStatus":"unknown"}],"cpeApplicability":[{"operator":"OR","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:gnu:aspell:*:*:*:*:*:*:*:*","versionStartIncluding":"0","versionEndIncluding":"0.60.8.2"}]}]}],"descriptions":[{"lang":"en","value":"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.\n\n\n\nThis issue was fixed in commit 782ce94e4dc71eaec4ee1bd945eb3b9c47c5387d which will be released in version 0.60.8.3.","supportingMedia":[{"type":"text/html","base64":false,"value":"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.<br><div><br></div><div>This issue was fixed in commit 782ce94e4dc71eaec4ee1bd945eb3b9c47c5387d&nbsp;which will be&nbsp;released in version&nbsp;0.60.8.3.</div>"}]}],"tags":["x_open-source"],"references":[{"url":"https://cert.pl/en/posts/2026/10/CVE-2026-75818","tags":["third-party-advisory"]},{"url":"http://aspell.net/","tags":["product"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"LOCAL","attackComplexity":"HIGH","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"ACTIVE","vulnConfidentialityImpact":"NONE","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","subIntegrityImpact":"LOW","vulnAvailabilityImpact":"LOW","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","version":"4.0","baseSeverity":"LOW","baseScore":1.8,"vectorString":"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"}}],"credits":[{"lang":"en","value":"Michał Majchrowicz (AFINE Team)","type":"finder"},{"lang":"en","value":"Marcin Wyczechowski (AFINE Team)","type":"finder"}],"source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"Vulnogram 1.0.3"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-06T12:49:13.392681Z","id":"CVE-2026-75820","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-10-06T12:49:39.265Z"}}]}}