CVE-2026-51263

schreibfaul1 ESP32-audioI2S 3.4.5 is vulnerable to Buffer Overflow. The Audio::openaispeech function in the Audio library manually constructs JSON request bodies and HTTP request headers by directly concatenating externally controllable input and instructions strings without effective length...

Exploit for CVE-2026-38426

CVE-2026-38426: strcpy Stack Buffer Overflow in Tasmota fetc...

GHSA-4H3H-63V6-88QX ESPHome vulnerable to denial-of-service via out-of-bounds check bypass in the API component

Summary An integer overflow in the API component's protobuf decoder allows denial-of-service attacks when API encryption is not used. Details The bounds check ptr + fieldlength end in components/api/proto.cpp can overflow when a malicious client sends a large fieldlength value. This affects all...

CVE-2025-12888 Constant Time Issue with Xtensa-based ESP32 and X22519

Vulnerability in X25519 constant-time cryptographic implementations due to timing side channels introduced by compiler optimizations and CPU architecture limitations, specifically with the Xtensa-based ESP32 chips. If targeting Xtensa it is recommended to use the low memory implementations of...