{"id":"CVE-2025-7403","aliases":["EUVD-2025-30240","GHSA-9r46-cqqw-6j2j"],"status":"published","title":"Bluetooth: bt_conn_tx_processor unsafe handling","description":"Unsafe handling in bt_conn_tx_processor causes a use-after-free, resulting in a write-before-zero. The written 4 bytes are attacker-controlled, enabling precise memory corruption.","severity":{"version":"3.1","score":7.6,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-08","score":0.00208,"percentile":0.10932,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-123"],"published":"2025-09-19T05:19:18Z","modified":"2026-10-28T02:31:05Z","products":[{"vendor":"zephyrproject","product":"zephyr"},{"vendor":"zephyrproject-rtos","product":"zephyr"}],"references":[{"url":"https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-9r46-cqqw-6j2j","tags":["Patch","Vendor Advisory","advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/7xxx/CVE-2025-7403.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-7403","tags":["advisory"]},{"url":"https://github.com/zephyrproject-rtos/zephyr","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2025-7403","title":"Bluetooth: bt_conn_tx_processor unsafe handling","description":"Unsafe handling in bt_conn_tx_processor causes a use-after-free, resulting in a write-before-zero. The written 4 bytes are attacker-controlled, enabling precise memory corruption.","status":"published","published":"2025-09-19T05:19:18.675Z","modified":"2026-10-13T19:59:46.425Z","cvss":[{"version":"3.1","score":7.6,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-123"],"updated_at":"2026-11-02T14:32:51.880027Z"}],"euvd":[{"id":"EUVD-2025-30240","description":"Unsafe handling in bt_conn_tx_processor causes a use-after-free, resulting in a write-before-zero. The written 4 bytes are attacker-controlled, enabling precise memory corruption.","status":"published","published":"2025-09-19T05:19:18Z","modified":"2026-10-13T19:59:46Z","cvss":[{"version":"3.1","score":7.6,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","level":"high"}],"updated_at":"2026-11-02T17:27:18.769576Z"}],"nvd":[{"id":"CVE-2025-7403","description":"Unsafe handling in bt_conn_tx_processor causes a use-after-free, resulting in a write-before-zero. The written 4 bytes are attacker-controlled, enabling precise memory corruption.","status":"published","published":"2025-09-19T06:15:35.96Z","modified":"2026-10-13T20:17:01.04Z","cvss":[{"version":"3.1","score":7.6,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"}],"cwes":["CWE-123"],"updated_at":"2026-11-02T14:11:30.865098Z"}],"osv":[{"id":"CVE-2025-7403","title":"Bluetooth: bt_conn_tx_processor unsafe handling","description":"Unsafe handling in bt_conn_tx_processor causes a use-after-free, resulting in a write-before-zero. The written 4 bytes are attacker-controlled, enabling precise memory corruption.","status":"published","published":"2025-09-19T05:19:18.675Z","modified":"2026-10-28T02:31:05.262118902Z","cvss":[{"version":"3.1","score":7.6,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","level":"high"}],"cwes":["CWE-123"],"updated_at":"2026-11-02T15:44:53.185592Z"}]}}