{"id":"CVE-2026-75818","state":"PUBLISHED","title":"Heap Buffer Overflow in GNU Aspell's prezip utility","description":"GNU Aspell prezip-bin contains a heap-based buffer overflow vulnerability in the decompressor in prog/prezip.c. The decompressor does not properly check buffer space, so a crafted compressed file can cause out-of-bounds read and write operations on the heap. An attacker who convinces a user to process a malicious compressed file with prezip-bin can trigger memory corruption, leading to a processs crash.\n\n\n\nThis issue was fixed in commit 15b188437f9e0192d4ac4472ad66a4e2f62a782f which will be released in version 0.60.8.3.","publishedAt":"2026-10-06T10:57:52.690Z","updatedAt":"2026-10-06T12:50:58.338Z","severity":{"score":1.8,"label":"Low","version":"4.0","vector":"CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:L/SI:L/SA:N","source":"CERT-PL"},"assigner":"CERT-PL","products":["GNU Aspell"],"affected":[{"vendor":"GNU","product":"Aspell","defaultStatus":"unknown","versions":[{"version":"0","status":"affected","lessThan":"0.60.8.3","versionType":"semver"}],"repo":"https://github.com/GNUAspell/aspell","modules":["prezip"],"programFiles":["prog/prezip.c"]}],"references":["https://cert.pl/en/posts/2026/10/CVE-2026-75818","http://aspell.net/"],"weaknesses":["CWE-122"],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/75xxx/CVE-2026-75818.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-75818","state":"PUBLISHED","datePublished":"2026-10-06T10:57:52.690Z","dateUpdated":"2026-10-06T12:50:58.338Z","assignerShortName":"CERT-PL","assignerOrgId":"4bb8329e-dd38-46c1-aafb-9bf32bcb93c6","dateReserved":"2026-08-18T10:13:29.246Z"},"containers":{"cna":{"title":"Heap Buffer Overflow in GNU Aspell's prezip utility","descriptions":[{"lang":"en","value":"GNU Aspell prezip-bin contains a heap-based buffer overflow vulnerability in the decompressor in prog/prezip.c. The decompressor does not properly check buffer space, so a crafted compressed file can cause out-of-bounds read and write operations on the heap. An attacker who convinces a user to process a malicious compressed file with prezip-bin can trigger memory corruption, leading to a processs crash.\n\n\n\nThis issue was fixed in commit 15b188437f9e0192d4ac4472ad66a4e2f62a782f which will be released in version 0.60.8.3."}],"affected":[{"vendor":"GNU","product":"Aspell","defaultStatus":"unknown","versions":[{"version":"0","status":"affected","lessThan":"0.60.8.3","versionType":"semver"}],"repo":"https://github.com/GNUAspell/aspell","modules":["prezip"],"programFiles":["prog/prezip.c"]}],"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":"LOW","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:L/SI:L/SA:N"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-122","lang":"en","description":"CWE-122 Heap-based buffer overflow","type":"CWE"}]}],"providerMetadata":{"shortName":"CERT-PL","orgId":"4bb8329e-dd38-46c1-aafb-9bf32bcb93c6","dateUpdated":"2026-10-06T10:57:52.690Z"},"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"}]}]}],"tags":["x_open-source"],"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":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-06T12:50:34.738213Z","id":"CVE-2026-75818","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-06T12:50:58.338Z"}}]}}}