# CVE-2025-7403

## Summary

- **CVE ID:** CVE-2025-7403
- **Severity:** HIGH
- **CVSS Score:** 7.6 (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H)
- **CWE:** CWE-123
- **Published:** Sep 19, 2025
- **Last Modified:** Mar 12, 2026

## 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.

## Affected Products

- zephyrproject-rtos — Zephyr (*)

## References

- [CNA](https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-9r46-cqqw-6j2j)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.21%
- **EPSS Percentile:** 10.9

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-12._