{"id":"CVE-2020-13593","aliases":["EUVD-2020-5840","GHSA-pq68-r59w-pq6c"],"status":"published","title":"The Bluetooth Low Energy Secure Manager Protocol (SMP) implementation in Texas Instruments...","description":"The Bluetooth Low Energy Secure Manager Protocol (SMP) implementation in Texas Instruments SimpleLink SIMPLELINK-CC2640R2-SDK through 2.2.3 allows the Diffie-Hellman check during the Secure Connection pairing to be skipped if the Link Layer encryption setup is performed earlier. An attacker in radio range can achieve arbitrary read/write access to protected GATT service data, cause a denial of service, or possibly control a device's function by establishing an encrypted session with an unauthenticated Long Term Key (LTK).","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00259,"percentile":0.17692,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-347","CWE-863"],"published":"2020-08-31T14:54:16Z","modified":"2026-06-17T02:53:25Z","products":[{"vendor":"ti","product":"simplelink-cc2640r2_software_development_kit"}],"references":[{"url":"http://www.ti.com/tool/BLE-STACK","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://asset-group.github.io/disclosures/sweyntooth/","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://asset-group.github.io/cves.html","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-13593"},{"url":"https://github.com/advisories/GHSA-pq68-r59w-pq6c"}],"sources":{"cve":[{"id":"CVE-2020-13593","description":"The Bluetooth Low Energy Secure Manager Protocol (SMP) implementation in Texas Instruments SimpleLink SIMPLELINK-CC2640R2-SDK through 2.2.3 allows the Diffie-Hellman check during the Secure Connection pairing to be skipped if the Link Layer encryption setup is performed earlier. An attacker in radio range can achieve arbitrary read/write access to protected GATT service data, cause a denial of service, or possibly control a device's function by establishing an encrypted session with an unauthenticated Long Term Key (LTK).","status":"published","published":"2020-08-31T14:54:16Z","modified":"2024-08-04T12:25:16.374Z","updated_at":"2026-11-02T14:35:53.868619Z"}],"euvd":[{"id":"EUVD-2020-5840","description":"The Bluetooth Low Energy Secure Manager Protocol (SMP) implementation in Texas Instruments SimpleLink SIMPLELINK-CC2640R2-SDK through 2.2.3 allows the Diffie-Hellman check during the Secure Connection pairing to be skipped if the Link Layer encryption setup is performed earlier. An attacker in radio range can achieve arbitrary read/write access to protected GATT service data, cause a denial of service, or possibly control a device's function by establishing an encrypted session with an unauthenticated Long Term Key (LTK).","status":"published","published":"2020-08-31T14:54:16Z","modified":"2024-08-04T12:25:16Z","updated_at":"2026-11-03T03:07:36.6695Z"}],"ghsa":[{"id":"GHSA-pq68-r59w-pq6c","title":"The Bluetooth Low Energy Secure Manager Protocol (SMP) implementation in Texas Instruments...","description":"The Bluetooth Low Energy Secure Manager Protocol (SMP) implementation in Texas Instruments SimpleLink SIMPLELINK-CC2640R2-SDK through 2.2.3 allows the Diffie-Hellman check during the Secure Connection pairing to be skipped if the Link Layer encryption setup is performed earlier. An attacker in radio range can achieve arbitrary read/write access to protected GATT service data, cause a denial of service, or possibly control a device's function by establishing an encrypted session with an unauthenticated Long Term Key (LTK).","status":"published","published":"2022-05-24T17:26:58Z","modified":"2023-01-29T05:03:54Z","cwes":["CWE-863"],"updated_at":"2026-11-02T14:45:25.585599Z"}],"nvd":[{"id":"CVE-2020-13593","description":"The Bluetooth Low Energy Secure Manager Protocol (SMP) implementation in Texas Instruments SimpleLink SIMPLELINK-CC2640R2-SDK through 2.2.3 allows the Diffie-Hellman check during the Secure Connection pairing to be skipped if the Link Layer encryption setup is performed earlier. An attacker in radio range can achieve arbitrary read/write access to protected GATT service data, cause a denial of service, or possibly control a device's function by establishing an encrypted session with an unauthenticated Long Term Key (LTK).","status":"published","published":"2020-08-31T15:15:10.493Z","modified":"2026-06-17T02:53:25.437Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5.8,"vector":"AV:A/AC:L/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-347"],"updated_at":"2026-11-02T14:06:13.600965Z"}]}}