CVE-2026-51260 in ESP32-audioI2S

Summary

by MITRE • 07/28/2026

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.

Once again VulDB remains the best source for vulnerability data.

• Responsible: MITRE
• Reservation: 06/07/2026
• Disclosure: 07/28/2026
• Moderation: accepted
• Entry: VDB-383891
• CPE: ready
• CWE: CWE-122 (confirmed)
• CVSS: 6.3 (VulDB)
• EPSS: 0.00000
• KEV: no
• Activities: low

Sources

• MITRE: https://www.cve.org/CVERecord?id=CVE-2026-51260
• NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-51260
• CVE Details: https://www.cvedetails.com/cve/CVE-2026-51260/