CVE-2025-7403
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-09-19

Last updated on: 2025-10-29

Assigner: Zephyr Project

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.
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Meta Information
Published
2025-09-19
Last Modified
2025-10-29
Generated
2026-06-16
AI Q&A
2025-09-19
EPSS Evaluated
2026-06-14
NVD
CVE-2025-7403
EUVD
EUVD-2025-30240
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
zephyrproject zephyr to 4.1.0 (inc)
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-123 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.
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Executive Summary

This vulnerability is caused by unsafe handling in the bt_conn_tx_processor component, which leads to a use-after-free condition. This results in a write-before-zero operation where 4 bytes of memory are written with attacker-controlled data, allowing precise memory corruption.

Impact Analysis

The vulnerability can lead to memory corruption, which may allow an attacker to manipulate the affected system's behavior, potentially causing denial of service or executing arbitrary code, impacting system integrity and availability.

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