{"id":"CVE-2021-3433","aliases":["EUVD-2021-26759"],"status":"published","title":"BT: Invalid channel map in CONNECT_IND results to Deadlock","description":"Invalid channel map in CONNECT_IND results to Deadlock. Zephyr versions \u003e= v2.5.0 Improper Check or Handling of Exceptional Conditions (CWE-703). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-3c2f-w4v6-qxrp","severity":{"version":"3.1","score":4,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00208,"percentile":0.1103,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-703"],"published":"2022-06-28T19:45:34Z","modified":"2026-06-17T04:05:05Z","products":[{"vendor":"zephyrproject","product":"zephyr"},{"vendor":"zephyrproject-rtos","product":"zephyr"}],"references":[{"url":"http://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-3c2f-w4v6-qxrp","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]}],"sources":{"cve":[{"id":"CVE-2021-3433","title":"BT: Invalid channel map in CONNECT_IND results to Deadlock","description":"Invalid channel map in CONNECT_IND results to Deadlock. Zephyr versions \u003e= v2.5.0 Improper Check or Handling of Exceptional Conditions (CWE-703). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-3c2f-w4v6-qxrp","status":"published","published":"2022-06-28T19:45:34.282Z","modified":"2024-09-16T18:28:43.255Z","cvss":[{"version":"3.1","score":4,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-703"],"updated_at":"2026-11-02T14:33:03.671751Z"}],"euvd":[{"id":"EUVD-2021-26759","description":"Invalid channel map in CONNECT_IND results to Deadlock. Zephyr versions \u003e= v2.5.0 Improper Check or Handling of Exceptional Conditions (CWE-703). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-3c2f-w4v6-qxrp","status":"published","published":"2022-06-28T19:45:34Z","modified":"2024-09-16T18:28:43Z","cvss":[{"version":"3.1","score":4,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-03T00:55:32.504958Z"}],"nvd":[{"id":"CVE-2021-3433","description":"Invalid channel map in CONNECT_IND results to Deadlock. Zephyr versions \u003e= v2.5.0 Improper Check or Handling of Exceptional Conditions (CWE-703). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-3c2f-w4v6-qxrp","status":"published","published":"2022-06-28T20:15:08.187Z","modified":"2026-06-17T04:05:05.027Z","cvss":[{"version":"3.1","score":4,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"secondary"},{"version":"3.1","score":3.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"low","assessor":"primary"},{"version":"2.0","score":2.1,"vector":"AV:L/AC:L/Au:N/C:N/I:N/A:P","level":"low","assessor":"primary"}],"cwes":["CWE-703"],"updated_at":"2026-11-02T14:07:06.501652Z"}]}}