CVE-2024-22768 in DVR HVR-4781
Summary
by MITRE • 01/23/2024
Improper Input Validation in Hitron Systems DVR HVR-4781 1.03~4.02 allows an attacker to cause network attack in case of using defalut admin ID/PW.
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Analysis
by VulDB Data Team • 12/31/2025
The vulnerability identified as CVE-2024-22768 represents a critical security flaw in Hitron Systems DVR HVR-4781 devices running firmware versions 1.03 through 4.02. This issue stems from improper input validation mechanisms that fail to adequately sanitize or validate user inputs received by the device's network services. The vulnerability specifically impacts the device's authentication system and network communication protocols, creating potential entry points for malicious actors who can exploit weak input validation to manipulate device behavior. The flaw resides in the device's handling of network requests and user credentials, where insufficient validation allows attackers to craft malformed inputs that bypass normal security checks.
The technical implementation of this vulnerability involves the device's failure to properly validate input parameters during network communication processes. When default administrative credentials are used, the device's authentication mechanism becomes particularly susceptible to exploitation through crafted network requests that manipulate input validation checks. This weakness enables attackers to perform unauthorized network operations by leveraging the predictable default credentials alongside the input validation bypass. The vulnerability's impact extends beyond simple authentication bypass to potentially allow remote code execution or network reconnaissance activities that could compromise the entire network infrastructure.
The operational impact of CVE-2024-22768 is substantial for organizations relying on Hitron HVR-4781 DVR systems, particularly in environments where these devices are connected to network infrastructure. Attackers who successfully exploit this vulnerability can gain administrative access to the device, potentially enabling them to modify device configurations, access stored video recordings, or use the device as a pivot point for further attacks within the network. The default administrative credentials create a known attack vector that significantly reduces the complexity of exploitation, making this vulnerability particularly dangerous for unpatched devices. Network-based attacks can be executed without requiring physical access to the device, allowing remote exploitation from any location with network connectivity to the affected system.
Security professionals should immediately implement mitigation strategies including changing default administrative credentials to strong, unique passwords and disabling unnecessary network services on affected devices. Network segmentation and access control measures should be implemented to limit access to these devices to authorized personnel only. Regular firmware updates should be deployed as soon as vendors release patches for this vulnerability. The vulnerability aligns with CWE-20, which describes improper input validation as a fundamental security weakness, and maps to ATT&CK techniques involving credential access and privilege escalation. Organizations should also conduct comprehensive network scans to identify all affected devices and implement monitoring solutions to detect suspicious network activity that may indicate exploitation attempts. Given the default credential exposure, immediate credential changes represent the most effective immediate mitigation strategy.