CVE-2025-7403 - Vulnerability Details - OpenCVE

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.

No CVSS v4.0

Attack Vector Adjacent Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00015.

Exploitation none

Automatable no

Technical Impact partial

No data.

No data.

No data.

No data.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

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

History

Fri, 19 Sep 2025 13:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Fri, 19 Sep 2025 05:30:00 +0000

Type	Values Removed	Values Added
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.
Title		Bluetooth: bt_conn_tx_processor unsafe handling
Weaknesses		CWE-123
References		https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-9r46-cqqw-6j2j
Metrics		cvssV3_1 `{'score': 7.6, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H'}`

MITRE

Status: PUBLISHED

Assigner: zephyr

Published: 2025-09-19T05:19:18.675Z

Updated: 2025-09-19T13:09:05.011Z

Reserved: 2025-07-10T04:08:30.581Z

Link: CVE-2025-7403

Vulnrichment

Updated: 2025-09-19T13:09:00.765Z

NVD

Status : Received

Published: 2025-09-19T06:15:35.960

Modified: 2025-09-19T06:15:35.960

Link: CVE-2025-7403

Redhat

No data.

OpenCVE Enrichment

No data.

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