Overview
The CVE-2025-20680 vulnerability is a critical security risk associated with the Bluetooth driver. This vulnerability exists due to an incorrect bounds check which could potentially lead to an out of bounds write. The repercussion of this flaw could result in local escalation of privilege. The most concerning aspect of this vulnerability is that it does not require any user interaction to exploit, thus amplifying its threat level. It primarily affects the users of devices with vulnerable Bluetooth drivers, posing a risk of system compromise or data leakage.
Vulnerability Summary
CVE ID: CVE-2025-20680
Severity: Critical (9.8 CVSS Score)
Attack Vector: Local
Privileges Required: User
User Interaction: None
Impact: System compromise or data leakage
Affected Products
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Product | Affected Versions
Bluetooth Driver | All versions prior to Patch ID: WCNCR00418044
How the Exploit Works
The exploit works by taking advantage of the incorrect bounds check in the Bluetooth driver. An attacker with user execution privileges can execute a specially crafted payload that would cause an out of bounds write. This can lead to an escalation of privileges, allowing the attacker unrestricted access to the system. The attack can be performed locally and does not require any user interaction, making it particularly dangerous.
Conceptual Example Code
The following is a conceptual shell command example that demonstrates how an attacker might exploit this vulnerability:
# The attacker crafts a payload that triggers the out of bounds write
$ echo "{ 'malicious_payload': '...' }" > exploit_payload.txt
# The attacker executes the payload with user privileges
$ ./vulnerable_bluetooth_driver --execute exploit_payload.txtMitigation and Prevention
The recommended mitigation for this vulnerability is to apply the vendor patch identified by Patch ID: WCNCR00418044. If the vendor patch cannot be applied immediately, it is advised to use Web Application Firewall (WAF) or Intrusion Detection System (IDS) as a temporary mitigation measure. However, these temporary measures are not substitutes for the vendor patch, which should be applied as soon as feasible. Regularly updating and patching software is the most effective way to protect systems from vulnerabilities like CVE-2025-20680.