🛡️ CVE-2024-8946
🟠 CVSS 7.3 — High ⚠️ Exploit Public CWE-122 NVD
7.3
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

Details

Severity HIGH
CVSS Score 7.3
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CWE CWE-122
Public Exploit ⚠️ Yes
Source NVD
Published 2024-09-17
Updated 2026-06-15
Modified 2024-09-24

Affected Packages

Software From version Fixed in
micropython — —
micropython-copy — —
micropython-io — —
micropython-os-path — —
micropython-string — —

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