{"id":"CVE-2021-3436","aliases":["EUVD-2021-26762"],"status":"published","title":"BT: Possible to overwrite an existing bond during keys distribution phase when the identity address of the bond is known","description":"BT: Possible to overwrite an existing bond during keys distribution phase when the identity address of the bond is known. Zephyr versions \u003e= 1.14.2, \u003e= 2.4.0, \u003e= 2.5.0 contain Use of Multiple Resources with Duplicate Identifier (CWE-694). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-j76f-35mc-4h63","severity":{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:A/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":0.0098,"percentile":0.62471,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-694"],"published":"2021-10-05T20:50:15Z","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-j76f-35mc-4h63","tags":["x_refsource_MISC","x_transferred","Exploit","Patch","Third Party Advisory"]}],"sources":{"cve":[{"id":"CVE-2021-3436","title":"BT: Possible to overwrite an existing bond during keys distribution phase when the identity address of the bond is known","description":"BT: Possible to overwrite an existing bond during keys distribution phase when the identity address of the bond is known. Zephyr versions \u003e= 1.14.2, \u003e= 2.4.0, \u003e= 2.5.0 contain Use of Multiple Resources with Duplicate Identifier (CWE-694). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-j76f-35mc-4h63","status":"published","published":"2021-10-05T20:50:15.802Z","modified":"2024-09-16T20:31:46.21Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-694"],"updated_at":"2026-11-02T14:33:04.020035Z"}],"euvd":[{"id":"EUVD-2021-26762","description":"BT: Possible to overwrite an existing bond during keys distribution phase when the identity address of the bond is known. Zephyr versions \u003e= 1.14.2, \u003e= 2.4.0, \u003e= 2.5.0 contain Use of Multiple Resources with Duplicate Identifier (CWE-694). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-j76f-35mc-4h63","status":"published","published":"2021-10-05T20:50:15Z","modified":"2024-09-16T20:31:46Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-03T00:55:13.041098Z"}],"nvd":[{"id":"CVE-2021-3436","description":"BT: Possible to overwrite an existing bond during keys distribution phase when the identity address of the bond is known. Zephyr versions \u003e= 1.14.2, \u003e= 2.4.0, \u003e= 2.5.0 contain Use of Multiple Resources with Duplicate Identifier (CWE-694). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-j76f-35mc-4h63","status":"published","published":"2021-10-05T21:15:09.293Z","modified":"2026-06-17T04:05:05.343Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"secondary"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L","level":"medium","assessor":"primary"},{"version":"2.0","score":6.4,"vector":"AV:N/AC:L/Au:N/C:N/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-694"],"updated_at":"2026-11-02T14:06:59.314106Z"}]}}