Is CVE-2024-8946 actively exploited?

No active exploitation of CVE-2024-8946 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2024-8946 be exploited remotely?

Yes. CVE-2024-8946 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2024-8946?

CVE-2024-8946 has a CVSS score of 7.5 (HIGH).

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HIGH

CVE-2024-8946

CWE-122Published: September 17, 2024· Updated: Jun 17, 2026

7.5

CVSS v3.1

Official Description

A vulnerability was found in MicroPython 1.23.0. It has been classified as critical. Affected is the function mp_vfs_umount of the file extmod/vfs.c of the component VFS Unmount Handler. The manipulation leads to heap-based buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The name of the patch is 29943546343c92334e8518695a11fc0e2ceea68b. It is recommended to apply a patch to fix this issue. In the VFS unmount process, the comparison between the mounted path string and the unmount requested string is based solely on the length of the unmount string, which can lead to a heap buffer overflow read.

NVD Source

Technical Analysis

CVE-2024-8946 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.