CVE-2026-51271

Summary

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.

Affected Software

Weaknesses

• n/a

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: poc
  • Automatable: no
  • Technical Impact: total

Additional References

• https://github.com/programmervuln/cveadvisory-/blob/main/CVE-2026-51271

References

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

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