{"schemaVersion":3,"id":"CVE-2021-25631","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"In the LibreOffice 7-1 series in versions prior to 7.1.2, and in the 7-0 series in versions prior to 7.0.5, the denylist can be circumvented by manipulating the link so it doesn't match the denylist but results in ShellExecute attempting to launch an executable type.","dates":{"published":"2021-05-03T11:10:33.079Z","modified":"2024-09-16T17:08:37.634Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":9.3,"severity":"high","version":"2.0","versionLabel":"v2.0","source":"NVD","vector":"AV:N/AC:M/Au:N/C:C/I:C/A:C","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":8.8,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":9.3,"severity":"high","vector":"AV:N/AC:M/Au:N/C:C/I:C/A:C","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.05043,"percentile":0.92205,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.05043},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.05043,"percentile":0.92205}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.05043,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.05043,"percentile":0.92205}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[{"id":"REF_39585795F17C29E8","name":"Exploit Reference (positive.security)","source":"reference","url":"https://positive.security/blog/url-open-rce#open-libreoffice","maturity":"unknown","reliabilityScore":0.2,"verified":false,"type":null,"platforms":[],"requiresAuth":null,"exploitdb":null,"metasploit":null}],"exploitCount":1,"weaknesses":[{"id":"CWE-184","name":"Incomplete List of Disallowed Inputs","description":"The product implements a protection mechanism that relies on a list of inputs (or properties of inputs) that are not allowed by policy or otherwise require other action to neutralize before additional processing takes place, but the list is incomplete.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/184.html"}],"affected":[{"vendor":"libreoffice","product":"libreoffice","name":"libreoffice","label":"libreoffice","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 7.0.0, < 7.0.5","noFixRecorded":false,"fixedIn":null},{"text":"≥ 7.1.0, < 7.1.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 7.0.0, < 7.0.5 | ≥ 7.1.0, < 7.1.2","eol":{"isEol":null,"eolDate":null,"matchMethod":"cpe","cycle":null,"product":{"name":"libreoffice","label":"LibreOffice","category":"app"}},"hubHref":"/vendor/libreoffice/libreoffice"},{"vendor":"the document foundation","product":"libreoffice","name":"LibreOffice","label":"libreoffice","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 7.1, < 7.1.2","noFixRecorded":false,"fixedIn":null},{"text":"≥ 7.0, < 7.0.5","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 7.1, < 7.1.2 | ≥ 7.0, < 7.0.5","eol":null,"hubHref":"/vendor/the_document_foundation/libreoffice"}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://positive.security/blog/url-open-rce#open-libreoffice","label":"positive.security/blog/url-open-rce","hostname":"positive.security","tags":["X Refsource MISC","Exploit","Third Party Advisory"]},{"url":"https://www.libreoffice.org/about-us/security/advisories/cve-2021-25631/","label":"www.libreoffice.org/about-us/security/advisories/cve-2021-25631/","hostname":"www.libreoffice.org","tags":["X Refsource MISC","Vendor Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2021-05-03T11:10:33.079Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-09-16T17:08:37.634Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":70,"level":"high","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T22:21:05.962Z","stale":false,"partial":false}}