schreibfaul1 ESP32-audioI2S 3.4.5 mp3_decoder.cpp UnpackFrameHeader heap-based overflow

Summaryinfo

A vulnerability marked as critical has been reported in schreibfaul1 ESP32-audioI2S 3.4.5. This issue affects the function UnpackFrameHeader of the file src/mp3_decoder/mp3_decoder.cpp. Performing a manipulation results in heap-based overflow. This vulnerability is identified as CVE-2026-51244. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in schreibfaul1 ESP32-audioI2S 3.4.5. It has been classified as critical. This affects the function UnpackFrameHeader of the file src/mp3_decoder/mp3_decoder.cpp. The manipulation with an unknown input leads to a heap-based overflow vulnerability. CWE is classifying the issue as CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

schreibfaul1 ESP32-audioI2S 3.4.5 has a buffer overflow vulnerability in UnpackFrameHeader(). Multiple attacker-controlled index parameters are used to access static and heap table arrays without range limitation. Invalid index values lead to out-of-bounds memory writing and heap buffer overflow.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-51244 since 06/07/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/27/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

• schreibfaul1

Name

• ESP32-audioI2S

Version

• 3.4.5

Website

• Product: https://github.com/schreibfaul1/ESP32-audioI2S/

CPE 2.3info

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CPE 2.2info

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Entryinfo

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