{"id":"CVE-2024-8947","url":"https://www.cyber-defence.io/tools/cve/CVE-2024-8947","generatedAt":"2026-10-27T23:56:20.269Z","title":"A vulnerability was found in MicroPython 1.22.2.","description":"A vulnerability was found in MicroPython 1.22.2. It has been declared as critical. Affected by this vulnerability is an unknown functionality of the file py/objarray.c. The manipulation leads to use after free. The attack can be launched remotely. The complexity of an attack is rather high. The exploitation appears to be difficult. Upgrading to version 1.23.0 is able to address this issue. The identifier of the patch is 4bed614e707c0644c06e117f848fa12605c711cd. It is recommended to upgrade the affected component. In micropython objarray component, when a bytes object is resized and copied into itself, it may reference memory that has already been freed.","published":"2024-09-17T19:15:29.000Z","lastModified":"2026-06-17T08:23:37.000Z","status":"Analyzed","sourceIdentifier":"cna@vuldb.com","cvss":{"version":"4.0","score":6.3,"severity":"MEDIUM","vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-416"],"affected":["micropython/micropython"],"epss":{"score":0.01029,"percentile":0.6346,"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":"low","text":"Lower severity and a low EPSS score (1.03%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://github.com/micropython/micropython/commit/4bed614e707c0644c06e117f848fa12605c711cd","tags":["Patch"],"source":"cna@vuldb.com"},{"url":"https://github.com/micropython/micropython/issues/13283","tags":["Exploit","Third Party Advisory"],"source":"cna@vuldb.com"},{"url":"https://github.com/micropython/micropython/issues/13283#issuecomment-1918479709","tags":["Exploit","Third Party Advisory"],"source":"cna@vuldb.com"},{"url":"https://github.com/micropython/micropython/releases/tag/v1.23.0","tags":["Release Notes"],"source":"cna@vuldb.com"},{"url":"https://vuldb.com/?ctiid.277765","tags":["Permissions Required"],"source":"cna@vuldb.com"},{"url":"https://vuldb.com/?id.277765","tags":["Third Party Advisory"],"source":"cna@vuldb.com"},{"url":"https://vuldb.com/?submit.409316","tags":["Third Party Advisory"],"source":"cna@vuldb.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2024-8947","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."}