{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-42805","assignerOrgId":"c95f66b2-7e7c-41c5-8f09-6f86ec68659c","state":"PUBLISHED","assignerShortName":"bosch","dateReserved":"2026-04-30T08:03:11.875Z","datePublished":"2026-09-10T09:04:09.212Z","dateUpdated":"2026-09-10T15:01:26.029Z"},"containers":{"cna":{"providerMetadata":{"orgId":"c95f66b2-7e7c-41c5-8f09-6f86ec68659c","shortName":"bosch","dateUpdated":"2026-09-10T09:04:09.212Z"},"descriptions":[{"lang":"en","value":"A stack-based buffer overflow vulnerability exists in the Bosch Sensortec BHI385 SensorAPI (C library) within the debug message parser function bhi385_parse_debug_message (located in bhi385_parse.c). \r\n\r\nThe function parses FIFO events and extracts an 8-bit message length directly from the attacker-controlled event payload (callback_info->data_ptr[0]) without enforcing bounds checks or clamping the value.\r\n\r\nWhen copying the payload into a fixed-size stack buffer of 17 bytes (uint8_t debug_msg[17]) via memcpy, providing a length byte greater than 16 causes the function to write past the allocated stack boundary. \r\n\r\nThis memory corruption can be triggered by a malicious or compromised sensor or bus participant, leading to a firmware crash, Denial of Service (DoS), or potentially the execution of arbitrary code via adjacent stack data corruption."}],"affected":[{"vendor":"Bosch Sensortec","product":"BHI385 SensorAPI (C Library)","versions":[{"version":"1.1.0","status":"affected","versionType":"custom","lessThanOrEqual":"2.1.0"}]}],"problemTypes":[{"descriptions":[{"lang":"en-US","description":"CWE-121 Stack-based Buffer Overflow","cweId":"CWE-121"}]}],"references":[{"url":"https://psirt.bosch.com/security-advisories/BOSCH-SA-223618.html","name":"https://psirt.bosch.com/security-advisories/BOSCH-SA-223618.html","tags":["vendor-advisory"]}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":8.4,"baseSeverity":"HIGH"}}]},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-10T15:01:13.115369Z","id":"CVE-2026-42805","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-10T15:01:26.029Z"}}]}}