PT-2026-65507 · Undefined · Undefined

CVE-2026-51266 · Published 2026-07-28 · Updated 2026-07-28

Mitre

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

schreibfaul1 ESP32-audioI2S 3.4.5 has a heap-based buffer overflow vulnerability in the HTTP request header construction logic. The application dynamically splices attacker-controlled host name, path, query string, and multiple HTTP header fields into a fixed ps ptr heap buffer without proper size limitation and boundary validation. Remote attackers can use an oversized crafted network request parameter to trigger out-of-bounds heap write, leading to arbitrary code execution.

Exploit

Fix

Heap Based Buffer Overflow

Weakness Enumeration

CWE-122

Related Identifiers

CVE-2026-51266

Affected Products

Undefined

References · 3

• 🔥 https://github.com/programmervuln/cveadvisory-/blob/main/CVE-2026-51266 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-51266 · Security Note
• https://github.com/schreibfaul1/ESP32-audioI2S/blob/master/src/Audio.cpp · Note