GeoVision GV-IP Device Utility 9.0.5.0 Broadcast Message reliance on security through obscurity

Summaryinfo

A vulnerability was found in GeoVision GV-IP Device Utility 9.0.5.0 and classified as critical. The impacted element is an unknown function of the component Broadcast Message Handler. Such manipulation leads to reliance on security through obscurity. This vulnerability is uniquely identified as CVE-2026-42363. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in GeoVision GV-IP Device Utility 9.0.5.0 and classified as problematic. Affected by this issue is an unknown code of the component Broadcast Message Handler. The manipulation with an unknown input leads to a reliance on security through obscurity vulnerability. Using CWE to declare the problem leads to CWE-656. The product uses a protection mechanism whose strength depends heavily on its obscurity, such that knowledge of its algorithms or key data is sufficient to defeat the mechanism. Impacted is confidentiality. CVE summarizes:

An insufficient encryption vulnerability exists in the Device Authentication functionality of GeoVision GV-IP Device Utility 9.0.5. Listening to broadcast packets can lead to credentials leak. An attacker can listen to broadcast messages to trigger this vulnerability. When interacting with various Geovision devices on the network, the utility may send privileged commands; in order to do so, the username and password of the device need to be provided. In some instances the command is broadcasted over UDP and the username/password are encrypted using a cryptographic protocol that appears to be derivated from Blowfish. However the symmetric key used for the encryption is also included in the packet, and thus the security of the username/password only relies on the "obscurity" of the encryption scheme. An attacker on the same LAN can listen to the broadcast traffic once an admin user interacts with the device, and decrypt the credentials using their own implementation of the algorithm. With this password the attacker would have full control over the device configuration, allowing them to change its ip address or even reset it to factory default.

The weakness was disclosed by Philippe Laulheret. The advisory is available at geovision.com.tw. This vulnerability is handled as CVE-2026-42363 since 04/27/2026. The exploitation is known to be difficult. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at CNNVD (CNNVD-202604-5316). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• GeoVision

Name

• GV-IP Device Utility

Version

• 9.0.5.0

CPE 2.3info

• 🔒

CPE 2.2info

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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