# Schreibfaul1 ESP32-audioI2S vulnerabilities

Source: https://junglewise.ai/threats/technologies/esp32-audioi2s  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/esp32-audioi2s.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 19 vulnerabilities in Schreibfaul1 ESP32-audioI2S: 0 in the last 7 days and 1 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-87961, was published on 10 September 2026. Nothing was published in the last eight weeks.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 1
- All time: 19 (0 critical, 0 exploited in the wild)

## About Schreibfaul1 ESP32-audioI2S

An Arduino library for playing audio files from various sources on ESP32 microcontrollers using I2S.

## Latest Schreibfaul1 ESP32-audioI2S vulnerabilities

- [CVE-2026-87961: ESP32-audioI2S heap out-of-bounds read in ID3 header processing](https://junglewise.ai/threats/cve-2026-87961-esp32-audioi2s-heap-out-of-bounds-read-in-id3-header-processing) (high, CVSS 7.1, published 10 Sep 2026)
- [CVE-2026-51272: schreibfaul1 ESP32-audioI2S heap overflow in latinToUTF8](https://junglewise.ai/threats/cve-2026-51272-schreibfaul1-esp32-audioi2s-heap-overflow-in-latintoutf8) (info, CVSS 9.8, published 30 Jul 2026)
- [CVE-2026-51275: schreibfaul1 ESP32-audioI2S heap buffer overflow in ID3v2 APIC parsing](https://junglewise.ai/threats/cve-2026-51275-schreibfaul1-esp32-audioi2s-heap-buffer-overflow-in-id3v2-apic) (info, CVSS 0, published 28 Jul 2026)
- [CVE-2026-51274: schreibfaul1 ESP32-audioI2S heap overflow in SYLT parser](https://junglewise.ai/threats/cve-2026-51274-schreibfaul1-esp32-audioi2s-heap-overflow-in-sylt-parser) (info, CVSS 0, published 28 Jul 2026)
- [CVE-2026-51273: schreibfaul1 ESP32-audioI2S heap overflow in showID3Tag](https://junglewise.ai/threats/cve-2026-51273-schreibfaul1-esp32-audioi2s-heap-overflow-in-showid3tag) (info, CVSS 0, published 28 Jul 2026)
- [CVE-2026-51271: schreibfaul1 ESP32-audioI2S heap buffer overflow in read_WAV_Header](https://junglewise.ai/threats/cve-2026-51271-schreibfaul1-esp32-audioi2s-heap-buffer-overflow-in-read-wav) (info, CVSS 0, published 28 Jul 2026)
- [CVE-2026-51270: schreibfaul1 ESP32-audioI2S heap overflow in htmlToUTF8](https://junglewise.ai/threats/cve-2026-51270-schreibfaul1-esp32-audioi2s-heap-overflow-in-htmltoutf8) (info, published 28 Jul 2026)
- [CVE-2026-51269: schreibfaul1 ESP32-audioI2S heap overflow in connecttospeech](https://junglewise.ai/threats/cve-2026-51269-schreibfaul1-esp32-audioi2s-heap-overflow-in-connecttospeech) (info, CVSS 9.8, published 28 Jul 2026)
- [CVE-2026-51268: schreibfaul1 ESP32-audioI2S heap overflow in dismantle_host](https://junglewise.ai/threats/cve-2026-51268-schreibfaul1-esp32-audioi2s-heap-overflow-in-dismantle-host) (info, CVSS 0, published 28 Jul 2026)
- [CVE-2026-51267: schreibfaul1 ESP32-audioI2S heap overflow in Audio::connecttohost](https://junglewise.ai/threats/cve-2026-51267-schreibfaul1-esp32-audioi2s-heap-overflow-in-audio-connecttohost) (info, CVSS 8.1, published 28 Jul 2026)
- [CVE-2026-51266: schreibfaul1 ESP32-audioI2S heap overflow in Audio::connecttohost](https://junglewise.ai/threats/cve-2026-51266-schreibfaul1-esp32-audioi2s-heap-overflow-in-audio-connecttohost) (info, CVSS 0, published 28 Jul 2026)
- [CVE-2026-51263: schreibfaul1 ESP32-audioI2S heap buffer overflow in speech functions](https://junglewise.ai/threats/cve-2026-51263-schreibfaul1-esp32-audioi2s-heap-buffer-overflow-in-speech) (info, CVSS 0, published 28 Jul 2026)
- [CVE-2026-51261: schreibfaul1 ESP32-audioI2S race condition in AudioBuffer::freeSpace](https://junglewise.ai/threats/cve-2026-51261-schreibfaul1-esp32-audioi2s-race-condition-in-audiobuffer) (info, CVSS 0, published 28 Jul 2026)
- [CVE-2026-51260: schreibfaul1 ESP32-audioI2S heap buffer overflow in AudioBuffer::writeSpace](https://junglewise.ai/threats/cve-2026-51260-schreibfaul1-esp32-audioi2s-heap-buffer-overflow-in-audiobuffer) (info, CVSS 0, published 28 Jul 2026)
- [CVE-2026-51259: schreibfaul1 ESP32-audioI2S integer overflow in audio buffer allocation](https://junglewise.ai/threats/cve-2026-51259-schreibfaul1-esp32-audioi2s-integer-overflow-in-audio-buffer) (info, CVSS 0, published 28 Jul 2026)
- [CVE-2026-51254: schreibfaul1 ESP32-audioI2S integer underflow in MP3Decoder](https://junglewise.ai/threats/cve-2026-51254-schreibfaul1-esp32-audioi2s-integer-underflow-in-mp3decoder) (info, CVSS 7.5, published 28 Jul 2026)
- [CVE-2026-51252: schreibfaul1 ESP32-audioI2S heap buffer overflow in MP3Decoder](https://junglewise.ai/threats/cve-2026-51252-schreibfaul1-esp32-audioi2s-heap-buffer-overflow-in-mp3decoder) (info, CVSS 8.1, published 28 Jul 2026)
- [CVE-2026-51251: Schreibfaul1 ESP32-audioI2S heap buffer overflow in MP3Decoder](https://junglewise.ai/threats/cve-2026-51251-schreibfaul1-esp32-audioi2s-heap-buffer-overflow-in-mp3decoder) (info, CVSS 0, published 28 Jul 2026)
- [CVE-2026-51244: schreibfaul1 ESP32-audioI2S heap buffer overflow in UnpackFrameHeader](https://junglewise.ai/threats/cve-2026-51244-schreibfaul1-esp32-audioi2s-heap-buffer-overflow-in) (high, CVSS 7.5, published 27 Jul 2026)

## Most severe Schreibfaul1 ESP32-audioI2S vulnerabilities

- [CVE-2026-51244: schreibfaul1 ESP32-audioI2S heap buffer overflow in UnpackFrameHeader](https://junglewise.ai/threats/cve-2026-51244-schreibfaul1-esp32-audioi2s-heap-buffer-overflow-in) (high, CVSS 7.5, published 27 Jul 2026)
- [CVE-2026-87961: ESP32-audioI2S heap out-of-bounds read in ID3 header processing](https://junglewise.ai/threats/cve-2026-87961-esp32-audioi2s-heap-out-of-bounds-read-in-id3-header-processing) (high, CVSS 7.1, published 10 Sep 2026)
- [CVE-2026-51272: schreibfaul1 ESP32-audioI2S heap overflow in latinToUTF8](https://junglewise.ai/threats/cve-2026-51272-schreibfaul1-esp32-audioi2s-heap-overflow-in-latintoutf8) (info, CVSS 9.8, published 30 Jul 2026)
- [CVE-2026-51269: schreibfaul1 ESP32-audioI2S heap overflow in connecttospeech](https://junglewise.ai/threats/cve-2026-51269-schreibfaul1-esp32-audioi2s-heap-overflow-in-connecttospeech) (info, CVSS 9.8, published 28 Jul 2026)
- [CVE-2026-51267: schreibfaul1 ESP32-audioI2S heap overflow in Audio::connecttohost](https://junglewise.ai/threats/cve-2026-51267-schreibfaul1-esp32-audioi2s-heap-overflow-in-audio-connecttohost) (info, CVSS 8.1, published 28 Jul 2026)
- [CVE-2026-51252: schreibfaul1 ESP32-audioI2S heap buffer overflow in MP3Decoder](https://junglewise.ai/threats/cve-2026-51252-schreibfaul1-esp32-audioi2s-heap-buffer-overflow-in-mp3decoder) (info, CVSS 8.1, published 28 Jul 2026)
- [CVE-2026-51254: schreibfaul1 ESP32-audioI2S integer underflow in MP3Decoder](https://junglewise.ai/threats/cve-2026-51254-schreibfaul1-esp32-audioi2s-integer-underflow-in-mp3decoder) (info, CVSS 7.5, published 28 Jul 2026)
- [CVE-2026-51275: schreibfaul1 ESP32-audioI2S heap buffer overflow in ID3v2 APIC parsing](https://junglewise.ai/threats/cve-2026-51275-schreibfaul1-esp32-audioi2s-heap-buffer-overflow-in-id3v2-apic) (info, CVSS 0, published 28 Jul 2026)
- [CVE-2026-51274: schreibfaul1 ESP32-audioI2S heap overflow in SYLT parser](https://junglewise.ai/threats/cve-2026-51274-schreibfaul1-esp32-audioi2s-heap-overflow-in-sylt-parser) (info, CVSS 0, published 28 Jul 2026)
- [CVE-2026-51273: schreibfaul1 ESP32-audioI2S heap overflow in showID3Tag](https://junglewise.ai/threats/cve-2026-51273-schreibfaul1-esp32-audioi2s-heap-overflow-in-showid3tag) (info, CVSS 0, published 28 Jul 2026)

## Vulnerabilities per week

Nothing was published in the last eight weeks.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 1 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Schreibfaul1 ESP32-audioI2S vulnerabilities", https://junglewise.ai/threats/technologies/esp32-audioi2s, 9 November 2026.