CVE-2026-42854

Katalog CVE

CVSS 9.8 · Critical EPSS 0,83%

Kerentanan Stack-based Buffer Overflow pada espressif arduino-esp32. Skor CVSS 3.1 9.8 (Critical) menurut github.com.

Deskripsi (NVD)

arduino-esp32 is an Arduino core for the ESP32, ESP32-S2, ESP32-S3, ESP32-C3, ESP32-C6 and ESP32-H2 microcontrollers. Prior to 3.3.8, the WebServer multipart form parser in arduino-esp32 allocates a Variable Length Array (VLA) on the stack whose size is derived from an attacker-controlled HTTP header field (Content-Type: multipart/form-data; boundary=...) without enforcing any length limit. Sending a boundary string longer than ~8000 characters overflows the 8192-byte task stack of the loopTask, causing a crash and potential remote code execution. This vulnerability is fixed in 3.3.8.

Rincian

Terbit di NVD

12 Mei 2026

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

9.8 (Critical), sumber github.com
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-121: Stack-based Buffer Overflow

EPSS (30 hari)

0,83% peluang dieksploitasi; lebih tinggi dari 56,3% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/espressif/arduino-esp32/security/advisories/GHSA-8cmm-3887-r32j exploit · advisory vendor