CVE-2026-51271 - Vulnerability Details - OpenCVE

In schreibfaul1 ESP32-audioI2S 3.4.5, a heap-based buffer overflow vulnerability exists in the WAV header parsing function read_WAV_Header(). The function reads untrusted chunk size and bytes-to-skip value directly from malicious WAV files without reasonable range restriction. Abnormally large bts and headerSize values lead to out-of-bounds heap memory read/write during header parsing, which can be exploited to execute arbitrary code, disclose sensitive information, cause denial of service or escalate privileges.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00347.

Exploitation poc

Automatable no

Technical Impact total

No data.

No data.

No data.

No data.

References

Link	Providers
https://github.com/programmervuln/cveadvisory-/blob/main/CVE-2026-51271
https://github.com/schreibfaul1/ESP32-audioI2S/blob/master/src/Audio.cpp

History

Tue, 28 Jul 2026 19:30:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-122
Metrics		cvssV3_1 `{'score': 9.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H'}` ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

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

Type	Values Removed	Values Added
Description		In schreibfaul1 ESP32-audioI2S 3.4.5, a heap-based buffer overflow vulnerability exists in the WAV header parsing function read_WAV_Header(). The function reads untrusted chunk size and bytes-to-skip value directly from malicious WAV files without reasonable range restriction. Abnormally large bts and headerSize values lead to out-of-bounds heap memory read/write during header parsing, which can be exploited to execute arbitrary code, disclose sensitive information, cause denial of service or escalate privileges.
References		https://github.com/programmervuln/cveadvisory-/blob/main/CVE-2026-51271 https://github.com/schreibfaul1/ESP32-audioI2S/blob/master/src/Audio.cpp

MITRE

Status: PUBLISHED

Assigner: mitre

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

Updated: 2026-07-28T17:58:25.548Z

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

Link: CVE-2026-51271

Vulnrichment

Updated: 2026-07-28T17:57:36.298Z

NVD

No data.

Redhat

No data.

OpenCVE Enrichment

No data.

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