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CVE-2025-44531: Denial of Service (DoS) Vulnerability in Realtek RTL8762EKF-EVB RTL8762E SDK

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Overview

The CVE-2025-44531 vulnerability has been identified in Realtek’s RTL8762EKF-EVB RTL8762E SDK v1.4.0. The vulnerability enables potential attackers to cause a Denial of Service (DoS) by sending a specially crafted before a pairing public key is received during a Bluetooth connection attempt. This vulnerability could significantly impact any system utilizing this SDK, leading to potential system compromise or data leakage.

Vulnerability Summary

CVE ID: CVE-2025-44531
Severity: High (7.5 CVSS Score)
Attack Vector: Network
Privileges Required: None
User Interaction: Required
Impact: Denial of Service (DoS), Potential system compromise or data leakage

Affected Products

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Product | Affected Versions

Realtek RTL8762EKF-EVB RTL8762E SDK | v1.4.0

How the Exploit Works

The exploit takes advantage of a flaw in the Bluetooth pairing process within the Realtek RTL8762EKF-EVB RTL8762E SDK. By sending a specific crafted before a pairing public key is received during a Bluetooth connection attempt, an attacker can trigger a Denial of Service (DoS). This can potentially compromise the system or lead to data leakage.

Conceptual Example Code

While the exact details of the exploit are not publicly available, a conceptual example might look something like this:

POST /bluetooth/pair HTTP/1.1
Host: target.example.com
Content-Type: application/json
{
"public_key": "valid_public_key",
"crafted_before": "malicious_payload"
}

In this example, the “crafted_before” field could contain a payload that exploits the vulnerability, causing the server to crash and enabling a Denial of Service (DoS).

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Disclaimer:

The information and code presented in this article are provided for educational and defensive cybersecurity purposes only. Any conceptual or pseudocode examples are simplified representations intended to raise awareness and promote secure development and system configuration practices.

Do not use this information to attempt unauthorized access or exploit vulnerabilities on systems that you do not own or have explicit permission to test.

Ameeba and its authors do not endorse or condone malicious behavior and are not responsible for misuse of the content. Always follow ethical hacking guidelines, responsible disclosure practices, and local laws.

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