CVE-2025-7403

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.

Score

CVSS 3.1 7.6 High

Status

Analyzed - vulnerabilities@zephyrproject.org

Published

2025-09-19

Last modified

2026-10-13

Weaknesses

CWE-123

Affected products

• Zephyr (Zephyrproject)
• Zephyr (Zephyrproject-rtos)

References

• https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-9r46-cqqw-6j2j