🔥 CRITICAL: CVE-2026-42854 in arduino-esp32 (<3.3.8) enables stack buffer overflow via HTTP multipart boundary — can crash device or allow RCE. Patch ASAP by upgrading to 3.3.8! https://radar.offseq.com/threat/cve-2026-42854-cwe-121-stack-based-buffer-overflow-caa5555e #OffSeq #CVE202642854 #IoTSecurity #Espressif