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10.0
CVE-2026-12847: GV-I/O Box 4E: Unsecured Service Allows Network Access
CVE-2026-12847
Summary
The GV-I/O Box 4E has a service that listens for network messages without proper security. This allows anyone on the network to interact with the device and potentially cause harm. You should ensure that this service is properly secured or disabled if not needed.
Original title
GV-I/O Box 4E is a smart embedded device with 4 input and 4 relays output that can be controlled over Ethernet and RS-485.
DVRSearch is a service running by default on the IOBox listening for UDP ...
Original description
GV-I/O Box 4E is a smart embedded device with 4 input and 4 relays output that can be controlled over Ethernet and RS-485.
DVRSearch is a service running by default on the IOBox listening for UDP messages on port 10001. Any user on the network can send messages to this service and interact with it.
Upon receiving a UDP message, the server reads at most 1460 bytes into a local buffer and a pointer to the buffer is stored in a global variable:
#### Gateway field stack overflow
The following code is vulnerable to a stack overflow that is attacker-controlled:
v7 = strlen(g_network_config->gateway);
memcpy(&reply_buf[216], g_network_config->gateway, v7);
DVRSearch is a service running by default on the IOBox listening for UDP messages on port 10001. Any user on the network can send messages to this service and interact with it.
Upon receiving a UDP message, the server reads at most 1460 bytes into a local buffer and a pointer to the buffer is stored in a global variable:
#### Gateway field stack overflow
The following code is vulnerable to a stack overflow that is attacker-controlled:
v7 = strlen(g_network_config->gateway);
memcpy(&reply_buf[216], g_network_config->gateway, v7);
nvd CVSS3.1
10.0
Vulnerability type
CWE-121
Stack-based Buffer Overflow
Published: 24 Jun 2026 · Updated: 23 Jul 2026 · First seen: 24 Jun 2026