CVE-2024-8947

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.

• CWE-416

• https://github.com/micropython/micropython/commit/4bed614e707c0644c06e117f848fa12605c711cdPatch
• https://github.com/micropython/micropython/issues/13283Exploit, Third Party Advisory
• https://github.com/micropython/micropython/issues/13283#issuecomment-1918479709Exploit, Third Party Advisory
• https://github.com/micropython/micropython/releases/tag/v1.23.0Release Notes
• https://vuldb.com/?ctiid.277765Permissions Required
• https://vuldb.com/?id.277765Third Party Advisory
• https://vuldb.com/?submit.409316Third Party Advisory

Published

Sep 17, 2024

Last Modified

Jun 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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