CVE-2024-8947
A vulnerability was found in MicroPython 1.22.2.
Does this matter?
Lower severity and a low EPSS score (1.03%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 4.0
- 6.3 MEDIUMCVSS: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
- EPSS
- 1.03% probability · 63th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- micropython/micropython
- Source
- cna@vuldb.com
EPSS 1.0% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.