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    2 vulnerabilities found for BME690 SensorAPI (C) by Bosch Sensortec

    CVE-2026-42806 (GCVE-0-2026-42806)

    Vulnerability from nvd – Published: 2026-09-10 09:04 – Updated: 2026-09-10 15:00
    VLAI
    Summary
    An out-of-bounds read vulnerability was discovered in the Bosch BME690 SensorAPI (C-driver) in version v1.0.3 and prior, specifically within the field data parsing logic in read_all_field_data (bme69x.c). The driver prefetches heater configuration registers into a contiguous 30-byte stack buffer (set_val) mapping IDAC, RES_HEAT, and GAS_WAIT tables. When parsing sensor field data, the gas_index is extracted using a 4-bit mask (0..15) but lacks boundary verification against the valid range (0..9). An attacker or a compromised peripheral mimicking a sensor on the I2C/SPI bus could return a payload with a gas index value of 10 or higher. This causes the driver to perform an out-of-bounds array access (set_val[20 + gas_index]), reading up to 6 bytes past the stack buffer. The leaked out-of-bounds byte is then written into the public gas_wait field, which may lead to measurement corruption or leak adjacent stack memory when telemetered or logged.
    Severity
    4.3 (Medium)
    CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-10 15:00 UTC
    CWE
    Assigner
    References
    Impacted products
    Vendor Product Version
    Bosch Sensortec BME690 SensorAPI (C) Affected: 1.0.1 , ≤ 1.0.3 (custom)
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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                "id": "CVE-2026-42806",
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                "role": "CISA Coordinator",
                "timestamp": "2026-09-10T15:00:33.822497Z",
                "version": "2.0.3"
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "BME690 SensorAPI (C)",
          "vendor": "Bosch Sensortec",
          "versions": [
            {
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              "versionType": "custom"
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        }
      ],
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    CVE-2026-42806 (GCVE-0-2026-42806)

    Vulnerability from cvelistv5 – Published: 2026-09-10 09:04 – Updated: 2026-09-10 15:00
    VLAI
    Summary
    An out-of-bounds read vulnerability was discovered in the Bosch BME690 SensorAPI (C-driver) in version v1.0.3 and prior, specifically within the field data parsing logic in read_all_field_data (bme69x.c). The driver prefetches heater configuration registers into a contiguous 30-byte stack buffer (set_val) mapping IDAC, RES_HEAT, and GAS_WAIT tables. When parsing sensor field data, the gas_index is extracted using a 4-bit mask (0..15) but lacks boundary verification against the valid range (0..9). An attacker or a compromised peripheral mimicking a sensor on the I2C/SPI bus could return a payload with a gas index value of 10 or higher. This causes the driver to perform an out-of-bounds array access (set_val[20 + gas_index]), reading up to 6 bytes past the stack buffer. The leaked out-of-bounds byte is then written into the public gas_wait field, which may lead to measurement corruption or leak adjacent stack memory when telemetered or logged.
    Severity
    4.3 (Medium)
    CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-10 15:00 UTC
    CWE
    Assigner
    References
    Impacted products
    Vendor Product Version
    Bosch Sensortec BME690 SensorAPI (C) Affected: 1.0.1 , ≤ 1.0.3 (custom)
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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                "timestamp": "2026-09-10T15:00:33.822497Z",
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