CVE-2026-51266 - Vulnerability Details - OpenCVE

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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation poc

Automatable yes

Technical Impact total

No data.

No data.

No data.

No data.

References

Link	Providers
https://github.com/programmervuln/cveadvisory-/blob/main/CVE-2026-51266
https://github.com/schreibfaul1/ESP32-audioI2S/blob/master/src/Audio.cpp

History

Tue, 28 Jul 2026 18:30:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-122
Metrics		cvssV3_1 `{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}` ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Tue, 28 Jul 2026 16:15:00 +0000

Type	Values Removed	Values Added
Description		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.
References		https://github.com/programmervuln/cveadvisory-/blob/main/CVE-2026-51266 https://github.com/schreibfaul1/ESP32-audioI2S/blob/master/src/Audio.cpp

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2026-07-28T00:00:00.000Z

Updated: 2026-07-28T18:04:07.933Z

Reserved: 2026-06-07T00:00:00.000Z

Link: CVE-2026-51266

Vulnrichment

Updated: 2026-07-28T18:04:01.106Z

NVD

No data.

Redhat

No data.

OpenCVE Enrichment

No data.

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