In schreibfaul1 ESP32-audioI2S 3.4.5, a heap-based buffer overflow vulnerability exists in the latinToUTF8() character encoding conversion function. The function calculates required buffer size by simply doubling input length and reallocates ps_ptr heap buffer without strict boundary validation. Malicious oversized input can trigger insufficient buffer allocation and out-of-bounds write during Latin-1 to UTF-8 conversion, leading to code execution, information disclosure, denial of service or privilege escalation.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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References
History
Thu, 30 Jul 2026 18:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | In schreibfaul1 ESP32-audioI2S 3.4.5, a heap-based buffer overflow vulnerability exists in the latinToUTF8() character encoding conversion function. The function calculates required buffer size by simply doubling input length and reallocates ps_ptr heap buffer without strict boundary validation. Malicious oversized input can trigger insufficient buffer allocation and out-of-bounds write during Latin-1 to UTF-8 conversion, leading to code execution, information disclosure, denial of service or privilege escalation. | |
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MITRE
Status: PUBLISHED
Assigner: mitre
Published:
Updated: 2026-07-30T17:30:16.830Z
Reserved: 2026-06-07T00:00:00.000Z
Link: CVE-2026-51272
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