High severity7.6NVD Advisory· Published Sep 19, 2025· Updated Jun 17, 2026
CVE-2025-7403
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.
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Affected products
3cpe:2.3:o:zephyrproject:zephyr:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:zephyrproject:zephyr:*:*:*:*:*:*:*:*range: <=4.1.0
- (no CPE)range: *
Patches
Vulnerability mechanics
References
1- github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-9r46-cqqw-6j2jnvdPatchVendor Advisory
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