{"schemaVersion":3,"id":"CVE-2021-32494","aliases":["UBUNTU-CVE-2021-32494"],"status":"published","duplicateOf":null,"title":null,"description":"Radare2 has a division by zero vulnerability in Mach-O parser's rebase_buffer function. This allow attackers to create malicious inputs that can cause denial of service.","dates":{"published":"2023-07-07T18:20:40.510Z","modified":"2024-11-12T19:47:21.001Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":10,"severity":"critical","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":10,"severity":"critical","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Ubuntu","score":7.5,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","exploitability":10,"impact":6,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":7.5,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00844,"percentile":0.57306,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-20T00:00:00.000Z","baselineScore":0.00844},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00844,"percentile":0.57306}],"last30":[{"date":"2026-09-20T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00844,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00844,"percentile":0.57306}]},"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":"GITHUB_RADAREORG_RADARE2","name":"Radare2","source":"github","url":"https://github.com/radareorg/radare2/issues/23953#issue-2844325926","maturity":"poc","reliabilityScore":0.3,"verified":false,"type":null,"platforms":[],"requiresAuth":null,"exploitdb":null,"metasploit":null}],"exploitCount":1,"weaknesses":[{"id":"CWE-369","name":"Divide By Zero","description":"The product divides a value by zero.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":"Medium","url":"https://cwe.mitre.org/data/definitions/369.html"}],"affected":[{"vendor":"ubuntu","product":"radare2","name":"radare2","label":"radare2","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/radare2","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"radare","product":"radare2","name":"radare2","label":"radare2","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"5.3.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"5.3.0","eol":null,"hubHref":"/vendor/radare/radare2"},{"vendor":"radare2","product":"radare2","name":"radare2","label":"radare2","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"5.3.0-git 26142","noFixRecorded":false,"fixedIn":null}],"versionsText":"5.3.0-git 26142","eol":null,"hubHref":"/vendor/radare2/radare2"}],"affectedCount":3,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/radareorg/radare2/issues/18667","label":"github.com/radareorg/radare2/issues/18667","hostname":"github.com","tags":["REPORT","Exploit","Issue Tracking","Patch","Vendor Advisory"]},{"url":"https://github.com/radareorg/radare2/commit/a07dedb804a82bc01c07072861942dd80c6b6d62","label":"github.com/radareorg/radare2/commit/a07dedb804a82bc01c07072861942dd80c6b6d62","hostname":"github.com","tags":["REPORT","Patch","Vendor Advisory"]},{"url":"https://ubuntu.com/security/CVE-2021-32494","label":"ubuntu.com/security/CVE-2021-32494","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-32494","label":"www.cve.org/CVERecord?id=CVE-2021-32494","hostname":"www.cve.org","tags":["REPORT"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2023-07-07T18:20:40.510Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-11-12T19:47:21.001Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":90,"level":"critical","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T15:19:50.652Z","stale":false,"partial":false}}