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CVE-2025-6521: Unencrypted AES Keys Vulnerability in Sight Bulb Pro

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Overview

The Sight Bulb Pro, a popular device in the smart home industry, has been discovered to have a critical vulnerability identified as CVE-2025-6521. During the initial setup, the device broadcasts an access point with AES encryption keys passed in cleartext. This flaw can potentially expose sensitive information, such as network credentials, if intercepted by an attacker.

Vulnerability Summary

CVE ID: CVE-2025-6521
Severity: High Risk – CVSS Score: 7.6
Attack Vector: Network
Privileges Required: None
User Interaction: Required
Impact: System compromise and potential data leakage

Affected Products

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Product | Affected Versions

Sight Bulb Pro | All versions prior to Vendor Patch

How the Exploit Works

The vulnerability resides in the initial setup of the Sight Bulb Pro device where it broadcasts an access point. The device sends AES encryption keys in cleartext which can be captured by an attacker within the network. With these keys, an attacker can decrypt communications between the management app and the Sight Bulb Pro, potentially gaining access to sensitive information such as network credentials.

Conceptual Example Code

An attacker could monitor network traffic during the initial setup of the device and capture the unencrypted AES keys. This could be done using a packet sniffing tool like Wireshark:

$ sudo wireshark -i wlan0 -k -Y 'wlan.fc.type_subtype == 0x08'

This command starts Wireshark on the wlan0 interface, captures packets, and filters for beacon frames broadcast by the Sight Bulb Pro during setup. The attacker could then analyze the captured traffic for the unencrypted AES keys.

Mitigation

Users are advised to apply the vendor patch as soon as it’s available. In the interim, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can provide temporary mitigation. These systems should be configured to monitor for suspicious network traffic and potential exploitation of this vulnerability.

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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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