CVE-2026-51259

CRITICAL

ESP32-audioI2S 3.4.5 Heap Buffer Overflow & RCE via Integer Overflow in Buffer Size

Title source: llm
STIX 2.1

Description

Unchecked unsigned integer overflow in buffer size calculation in schreibfaul1 ESP32-audioI2S 3.4.5 leads to undersized PSRAM buffer allocation. Subsequent normal audio buffer read and write operations cause heap out-of-bounds access, memory corruption, denial of service, and potential code execution.

Scores

CVSS v3 9.8
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact total

Details

CWE
CWE-122
Status published
Published Jul 28, 2026
Tracked Since Jul 28, 2026