CVE-2026-51259
CRITICALESP32-audioI2S 3.4.5 Heap Buffer Overflow & RCE via Integer Overflow in Buffer Size
Title source: llmDescription
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