CVE-2025-7403CWE-123
CVE-2025-7403
High · published September 19, 2025
What it is
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.
The record
Technical detail
- CVSS v3.1
- 7.6 · HIGH
- Vector
- CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
- CVSS v4.0
- Not supplied
- EPSS
- 0.00208 · 10.3th percentile
- Weakness
- CWE-123 · Write-what-where Condition
- Published
- 2025-09-19T10:15Z
Affected products (1)
| Product | Versions | Fixed in |
|---|
| zephyrproject/zephyr | ≤ 4.1.0 | — |
References (1)
EPSS history
Timeline