CVE-2026-51260 | Unsafe fixed-size memcpy operation in AudioBuffer::writeSpac… | CVSS 9.4 CRITICAL

Description

Unsafe fixed-size memcpy operation in AudioBuffer::writeSpace() of schreibfaul1 ESP32-audioI2S 3.4.5 allows remote heap buffer overflow. The code copies a full UINT16_MAX bytes without validating destination available space, causing out-of-bounds memory write.

Metadata

CVE ID: CVE-2026-51260
State: PUBLISHED
Assigner: mitre
Reserved: 2026-06-07 00:00 UTC
Published: 2026-07-28 00:00 UTC
Last updated: 2026-07-28 18:27 UTC
Primary CWE: CWE-122
CWE-122 Heap-based Buffer Overflow
Vendor / Product: n/a / n/a
Sources: cve.org · NVD

Severity & Metrics

9.4 CRITICAL CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H

SSVC — CISA Coordinator

Exploitation: PoC
Automatable: yes
Tech. Impact: partial

Affected products (1)

Vendor	Product	Platform	Versions
n/a	n/a	—	n/a

Weakness (CWE)

CWE	Source	Description
—	cna	n/a
CWE-122	adp	CWE-122 Heap-based Buffer Overflow

CVSS scores (1)

Score	Severity	Version	Source	Vector
9.4	CRITICAL	3.1	adp	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H

References (2)