{"api_version":"1","generated_at":"2026-09-11T00:48:33+00:00","cve":"CVE-2026-42804","urls":{"html":"https://cve.report/CVE-2026-42804","api":"https://cve.report/api/cve/CVE-2026-42804.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-42804","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-42804"},"summary":{"title":"CVE-2026-42804","description":"A stack-based buffer overflow vulnerability exists in the Bosch Sensortec BHI360 SensorAPI(C-Library) in versions up to and including commit d6b200416a.\r\n\r\nThe vulnerability is located within the FIFO parsing and debug logging subsystem inside the function bhi360_parse_debug_message() in bhi360_parse.c (lines 1852-1875). \r\n\r\nThe parser trusts the first payload byte of a debug frame as the message length (msg_length) and copies that many bytes into a fixed-size 17-byte stack buffer (debug_msg) via memcpy without performing any bounds checking.\r\n\r\nA locally or physically positioned attacker 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vulnerability exists in the Bosch Sensortec BHI360 SensorAPI(C-Library) in versions up to and including commit d6b200416a.\r\n\r\nThe vulnerability is located within the FIFO parsing and debug logging subsystem inside the function bhi360_parse_debug_message() in bhi360_parse.c (lines 1852-1875). \r\n\r\nThe parser trusts the first payload byte of a debug frame as the message length (msg_length) and copies that many bytes into a fixed-size 17-byte stack buffer (debug_msg) via memcpy without performing any bounds checking.\r\n\r\nA locally or physically positioned attacker (e.g., via a malicious sensor, counterfeit hardware module, or a Man-in-the-Middle on the communication bus) can exploit this vulnerability by injecting a crafted debug frame with a length byte exceeding 16.\r\n\r\nThis corrupts adjacent stack data, including the saved return address.\r\n\r\nFurthermore, because the overflowed buffer is subsequently passed to a printf-style logging sink, the attacker can supply format string specifiers (e.g., %n) to execute arbitrary code on the host microcontroller/SoC or cause a reliable system crash (Denial of Service).","Type":"Description","Title":"CVE-2026-42804"}]}}}