{"id":"CVE-2021-32494","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-32494","generatedAt":"2026-10-27T22:32:29.494Z","title":"Radare2 has a division by zero vulnerability in Mach-O parser's rebase_buffer function.","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","published":"2023-07-07T19:15:10.000Z","lastModified":"2026-06-17T03:53:04.000Z","status":"Modified","sourceIdentifier":"patrick@puiterwijk.org","cvss":{"version":"3.1","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"},"cwe":["CWE-369"],"affected":["radare/radare2"],"epss":{"score":0.00844,"percentile":0.5771,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.84%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://github.com/radareorg/radare2/commit/a07dedb804a82bc01c07072861942dd80c6b6d62","tags":["Patch","Vendor Advisory"],"source":"patrick@puiterwijk.org"},{"url":"https://github.com/radareorg/radare2/issues/18667","tags":["Exploit","Issue Tracking","Patch","Vendor Advisory"],"source":"patrick@puiterwijk.org"},{"url":"https://github.com/radareorg/radare2/commit/a07dedb804a82bc01c07072861942dd80c6b6d62","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/radareorg/radare2/issues/18667","tags":["Exploit","Issue Tracking","Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-32494","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}