CVE-2025-7403

MEDIUM EPSS 9.3%
Published Sep 19, 20259mo ago · Modified Jun 17, 20261w ago
6.5 CVSS 3.1
Medium
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Published Sep 19, 2025 9mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
6.5
Exploitability
2.8
Impact
3.6
Vector string
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Adjacent
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
9.3% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-123

Affected Products 1

VendorProductVersionRange
zephyrprojectzephyr* ≤4.1.0

References 1

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

Remediation

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