CVE-2025-7403

Sept. 19, 2025, 4 p.m.

7.6
High

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.

Product(s) Impacted

Vendor Product Versions
Zephyrproject
  • Zephyr
  • *

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-123
Write-what-where Condition
Any condition where the attacker has the ability to write an arbitrary value to an arbitrary location, often as the result of a buffer overflow.

*CPE(s)

Affected systems and software identified for this CVE.

Type Vendor Product Version Update Edition Language Software Edition Target Software Target Hardware Other Information
a zephyrproject zephyr / / / / / / / /

References

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

Tags

vulnerabilities@zephyrproject.org
CWE-123
2025-09-19
CVE-2025-7403

CVSS Score

7.6 / 10

CVSS Data - 3.1

  • Attack Vector: ADJACENT_NETWORK
  • Attack Complexity: LOW
  • Privileges Required: NONE
  • Scope: UNCHANGED
  • Confidentiality Impact: LOW
  • Integrity Impact: LOW
  • Availability Impact: HIGH

    • CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H

    View Vector String

Timeline

Published: Sept. 19, 2025, 6:15 a.m.
Last Modified: Sept. 19, 2025, 4 p.m.

Status : Awaiting Analysis

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

vulnerabilities@zephyrproject.org

*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.