{"id":"CVE-2026-3665","state":"PUBLISHED","title":"xlnt-community xlnt XLSX File xlsx_consumer.cpp read_office_document null pointer dereference","description":"A vulnerability was identified in xlnt-community xlnt up to 1.6.1. The affected element is the function xlnt::detail::xlsx_consumer::read_office_document of the file source/detail/serialization/xlsx_consumer.cpp of the component XLSX File Parser. The manipulation leads to null pointer dereference. The attack must be carried out locally. The exploit is publicly available and might be used.","publishedAt":"2026-03-07T15:32:08.520Z","updatedAt":"2026-03-11T16:29:12.576Z","severity":{"score":4.8,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P","source":"VulDB"},"assigner":"VulDB","products":["xlnt-community xlnt"],"affected":[{"vendor":"xlnt-community","product":"xlnt","versions":[{"version":"1.6.0","status":"affected"},{"version":"1.6.1","status":"affected"}],"modules":["XLSX File Parser"]}],"references":["https://vuldb.com/?id.349554","https://vuldb.com/?ctiid.349554","https://vuldb.com/?submit.764647","https://github.com/xlnt-community/xlnt/issues/140","https://github.com/oneafter/0128/blob/main/xl4/repro","https://github.com/xlnt-community/xlnt/"],"weaknesses":["CWE-476","CWE-404"],"ingestedAt":"2026-10-29T20:11:50.837Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/3xxx/CVE-2026-3665.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-3665","state":"PUBLISHED","datePublished":"2026-03-07T15:32:08.520Z","dateUpdated":"2026-03-11T16:29:12.576Z","assignerShortName":"VulDB","assignerOrgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateReserved":"2026-03-06T20:34:47.839Z"},"containers":{"cna":{"title":"xlnt-community xlnt XLSX File xlsx_consumer.cpp read_office_document null pointer dereference","descriptions":[{"lang":"en","value":"A vulnerability was identified in xlnt-community xlnt up to 1.6.1. The affected element is the function xlnt::detail::xlsx_consumer::read_office_document of the file source/detail/serialization/xlsx_consumer.cpp of the component XLSX File Parser. The manipulation leads to null pointer dereference. The attack must be carried out locally. The exploit is publicly available and might be used."}],"affected":[{"vendor":"xlnt-community","product":"xlnt","versions":[{"version":"1.6.0","status":"affected"},{"version":"1.6.1","status":"affected"}],"modules":["XLSX File Parser"]}],"references":[{"url":"https://vuldb.com/?id.349554","name":"VDB-349554 | xlnt-community xlnt XLSX File xlsx_consumer.cpp read_office_document null pointer dereference","tags":["vdb-entry","technical-description"]},{"url":"https://vuldb.com/?ctiid.349554","name":"VDB-349554 | CTI Indicators (IOB, IOC, IOA)","tags":["signature","permissions-required"]},{"url":"https://vuldb.com/?submit.764647","name":"Submit #764647 | xlnt-community xlnt commit bceb706 and before NULL Pointer Dereference","tags":["third-party-advisory"]},{"url":"https://github.com/xlnt-community/xlnt/issues/140","tags":["issue-tracking"]},{"url":"https://github.com/oneafter/0128/blob/main/xl4/repro","tags":["exploit"]},{"url":"https://github.com/xlnt-community/xlnt/","tags":["product"]}],"metrics":[{"cvssV4_0":{"version":"4.0","baseScore":4.8,"vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P","baseSeverity":"MEDIUM"}},{"cvssV3_1":{"version":"3.1","baseScore":3.3,"vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R","baseSeverity":"LOW"}},{"cvssV3_0":{"version":"3.0","baseScore":3.3,"vectorString":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R","baseSeverity":"LOW"}},{"cvssV2_0":{"version":"2.0","baseScore":1.7,"vectorString":"AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-476","type":"CWE","lang":"en","description":"NULL Pointer Dereference"}]},{"descriptions":[{"cweId":"CWE-404","type":"CWE","lang":"en","description":"Denial of Service"}]}],"providerMetadata":{"shortName":"VulDB","orgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateUpdated":"2026-03-07T15:32:08.520Z"},"timeline":[{"time":"2026-03-06T00:00:00.000Z","lang":"en","value":"Advisory disclosed"},{"time":"2026-03-06T01:00:00.000Z","lang":"en","value":"VulDB entry created"},{"time":"2026-03-06T21:39:55.000Z","lang":"en","value":"VulDB entry last update"}],"credits":[{"lang":"en","value":"Oneafter (VulDB User)","type":"reporter"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-03-11T16:14:26.493656Z","id":"CVE-2026-3665","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":"2026-03-11T16:29:12.576Z"}}]}}}