CVE-2024-8947

Name: CVE-2024-8947
Creator: NVD / NIST
Published: 2024-09-17T19:15:29.483+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.3/10EPSS 1.02%

Last modified Jun 17, 2026

CVE-2024-8947 is a medium-severity vulnerability rated 6.3/10 on the CVSS scale. A vulnerability was found in MicroPython 1.22.2. It has been declared as critical. EPSS estimates a 1.02% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

8.1/10

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS 4.0

6.3/10

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/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

1.02%

59.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-416

Affected Software

Vendor	Product	Versions
Micropython	Micropython	1.22.2

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

Timeline

Published: Sep 17, 2024
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2024-8947?

How severe is CVE-2024-8947?

CVE-2024-8947 has a CVSS score of 6.3/10 (MEDIUM severity). The EPSS model estimates a 1.02% probability of exploitation in the next 30 days.

How do I fix CVE-2024-8947?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2024-8947?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST