Overview
The cybersecurity industry is facing an alarming situation due to the discovery of a new vulnerability, CVE-2025-20702. This flaw exists in the Airoha Bluetooth audio SDK, a widely used software component in Bluetooth-enabled devices. The vulnerability could allow an attacker to gain unauthorized access to the RACE protocol, leading to a remote escalation of privilege. This issue is particularly concerning because it does not require any additional execution privileges or user interaction to be exploited. As a result, it poses a severe threat to devices using the affected audio SDK, potentially leading to system compromise or data leakage.
Vulnerability Summary
CVE ID: CVE-2025-20702
Severity: High (8.8 CVSS Severity Score)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Remote escalation of privilege potentially leading to system compromise or data leakage
Affected Products
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Product | Affected Versions
Airoha Bluetooth Audio SDK | All versions prior to patch
How the Exploit Works
This vulnerability stems from insufficient security measures in the RACE protocol of the Airoha Bluetooth audio SDK. An attacker could exploit this flaw by sending specifically crafted data packets over the network to the targeted device. Upon receipt, the device processes these packets, enabling the attacker to manipulate the RACE protocol and escalate their privileges remotely. The absence of required user interaction or additional execution privileges makes this exploit remarkably stealthy and dangerous.
Conceptual Example Code
Below is a conceptual example of how the vulnerability might be exploited. This example represents a malicious payload sent over the network to the targeted device.
POST /RACE/protocol HTTP/1.1
Host: target_device_ip
Content-Type: application/bin
{ "malicious_payload": "base64_encoded_exploit_code" }In this simulated exploit, ‘base64_encoded_exploit_code’ would represent the actual malicious code designed to manipulate the RACE protocol and escalate privileges on the targeted device.
Mitigation
The best way to mitigate this vulnerability is to apply the vendor-provided patch for the Airoha Bluetooth audio SDK. In cases where immediate patching is not possible, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as a temporary mitigation method, providing an additional layer of security against potential exploitation. Always remember that these are only temporary solutions, and applying the official patch should be the ultimate goal.