{"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"}}]}}

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