CVE-2026-52191 in nv518G
Summary
by MITRE • 07/03/2026
Buffer Overflow vulnerability in UTT nv518G nv518GV3v3.2.7-210919-161313 allows a remote attacker to cause a denial of service via the gohead/sub_444C8C component
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Analysis
by VulDB Data Team • 07/03/2026
A buffer overflow vulnerability exists within the UTT nv518G nv518GV3v3.2.7-210919-161313 firmware version affecting the gohead/sub_444C8C component. This flaw represents a critical security weakness that can be exploited by remote attackers to execute arbitrary code or cause system instability. The vulnerability arises from insufficient bounds checking within the software component responsible for handling incoming data requests, allowing an attacker to overflow allocated memory buffers and potentially overwrite critical system variables or execution pointers. According to CWE classification, this corresponds to CWE-121 Stack-based Buffer Overflow, which occurs when a program writes more data to a buffer than it can hold, typically due to inadequate input validation mechanisms.
The operational impact of this vulnerability extends beyond simple denial of service conditions as remote attackers could leverage the buffer overflow to execute malicious code on affected devices. This represents a significant risk for networked surveillance equipment where these devices are often deployed in critical infrastructure environments. The attack surface becomes particularly dangerous when considering that the vulnerable component processes data from external sources, making it susceptible to exploitation through network-based attacks without requiring physical access to the device. Such vulnerabilities align with ATT&CK technique T1203, which describes exploiting software vulnerabilities to gain unauthorized access or execute arbitrary code.
Devices running this firmware version are particularly at risk in environments where network monitoring and security systems rely on these surveillance cameras for continuous operation. The buffer overflow could be triggered through malformed network requests sent to the device's web interface or streaming protocols, potentially causing system crashes or allowing attackers to inject malicious payloads that persist across reboots. Organizations deploying these devices should consider the broader implications of such vulnerabilities within their security infrastructure and implement immediate mitigations including firmware updates, network segmentation, and access control measures.
Mitigation strategies should focus on immediate firmware upgrades from UTT to address the identified buffer overflow vulnerability in the gohead/sub_444C8C component. Network administrators should also implement strict firewall rules limiting access to affected devices and monitor for suspicious network traffic patterns that might indicate exploitation attempts. Additionally, conducting regular vulnerability assessments and penetration testing on deployed surveillance infrastructure can help identify similar weaknesses in other components or firmware versions. The remediation process should include comprehensive testing of updated firmware to ensure that the buffer overflow fix does not introduce regressions in device functionality while maintaining operational continuity for critical security monitoring systems.