CVE-2026-51259 - Vulnerability Details - OpenCVE

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.

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

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

No data.

No data.

No data.

Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://github.com/programmervuln/cveadvisory-/blob/main/CVE-2026-51259
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': 9.8, '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		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.
References		https://github.com/programmervuln/cveadvisory-/blob/main/CVE-2026-51259 https://github.com/schreibfaul1/ESP32-audioI2S/blob/master/src/Audio.cpp

Projects

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MITRE

Status: PUBLISHED

Assigner: mitre

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

Updated: 2026-07-28T18:22:24.022Z

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

Link: CVE-2026-51259

Vulnrichment

Updated: 2026-07-28T18:22:14.699Z

NVD

No data.

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-122

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