{"id":"CVE-2021-32494","aliases":["EUVD-2021-19340","GHSA-v4qw-9ffj-jq3x","UBUNTU-CVE-2021-32494"],"status":"published","title":"Radare2 has a division by zero vulnerability in Mach-O parser's rebase_buffer function. This...","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.","severity":{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00844,"percentile":0.58416,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-369"],"published":"2023-07-07T18:20:40Z","modified":"2026-10-20T14:02:44Z","affected":[{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"radare2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.9.6-3.1ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"radare2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.6.0+dfsg-1","2.0.0+dfsg-1","2.1.0+dfsg-1","2.3.0+dfsg-1","2.3.0+dfsg-2","2.3.0+dfsg-2ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"radare2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.2.1+dfsg-5build1","4.0.0+dfsg-1","4.2.1+dfsg-1","4.2.1+dfsg-2","4.2.1+dfsg-2ubuntu0.1~esm1"]}],"products":[{"vendor":"radare","product":"radare2"},{"vendor":"radare2","product":"radare2"}],"references":[{"url":"https://github.com/radareorg/radare2/issues/18667","tags":["x_transferred","Exploit","Issue Tracking","Patch","Vendor Advisory","fix","report"]},{"url":"https://github.com/radareorg/radare2/commit/a07dedb804a82bc01c07072861942dd80c6b6d62","tags":["x_transferred","Patch","Vendor Advisory","fix","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-32494"},{"url":"https://github.com/advisories/GHSA-v4qw-9ffj-jq3x"},{"url":"https://ubuntu.com/security/CVE-2021-32494","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-32494","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2021-32494","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.\n\n\n","status":"published","published":"2023-07-07T18:20:40.51Z","modified":"2024-11-12T19:47:21.001Z","cvss":[{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-369"],"updated_at":"2026-11-02T14:33:07.014772Z"}],"euvd":[{"id":"EUVD-2021-19340","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.\n\n\n","status":"published","published":"2023-07-07T18:20:40Z","modified":"2024-11-12T19:47:21Z","cvss":[{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-03T00:05:03.88189Z"}],"ghsa":[{"id":"GHSA-v4qw-9ffj-jq3x","title":"Radare2 has a division by zero vulnerability in Mach-O parser's rebase_buffer function. This...","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.\n\n\n","status":"published","published":"2023-07-07T21:30:17Z","modified":"2024-04-04T05:50:55Z","cvss":[{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-369"],"updated_at":"2026-11-02T14:56:36.514369Z"}],"nvd":[{"id":"CVE-2021-32494","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.\n\n\n","status":"published","published":"2023-07-07T19:15:09.507Z","modified":"2026-06-17T03:53:03.59Z","cvss":[{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-369"],"updated_at":"2026-11-02T14:07:07.764332Z"}],"osv":[{"id":"CVE-2021-32494","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.\n\n\n","status":"published","published":"2023-07-07T19:15:09.507Z","modified":"2026-10-20T14:02:44.302657948Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:19.793849Z"},{"id":"UBUNTU-CVE-2021-32494","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.","status":"published","published":"2023-07-07T19:15:00Z","modified":"2026-04-22T12:53:32.638882Z","cvss":[{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:54:27.332852Z"}]}}