{"id":"CVE-2026-42805","state":"PUBLISHED","title":"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 ","description":"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.","publishedAt":"2026-09-10T09:04:09.212Z","updatedAt":"2026-09-10T15:01:26.029Z","severity":{"score":8.4,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","source":"bosch"},"assigner":"bosch","products":["Bosch Sensortec BHI385 SensorAPI (C Library)"],"affected":[{"vendor":"Bosch Sensortec","product":"BHI385 SensorAPI (C Library)","versions":[{"version":"1.1.0","status":"affected","lessThanOrEqual":"2.1.0","versionType":"custom"}]}],"references":["https://psirt.bosch.com/security-advisories/BOSCH-SA-223618.html"],"weaknesses":["CWE-121"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/42xxx/CVE-2026-42805.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-42805","state":"PUBLISHED","datePublished":"2026-09-10T09:04:09.212Z","dateUpdated":"2026-09-10T15:01:26.029Z","assignerShortName":"bosch","assignerOrgId":"c95f66b2-7e7c-41c5-8f09-6f86ec68659c","dateReserved":"2026-04-30T08:03:11.875Z"},"containers":{"cna":{"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","lessThanOrEqual":"2.1.0","versionType":"custom"}]}],"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"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-121","lang":"en-US","description":"CWE-121 Stack-based Buffer Overflow"}]}],"providerMetadata":{"shortName":"bosch","orgId":"c95f66b2-7e7c-41c5-8f09-6f86ec68659c","dateUpdated":"2026-09-10T09:04:09.212Z"}},"adp":[{"title":"CISA ADP Vulnrichment","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"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-10T15:01:26.029Z"}}]}}}