Vulnerability · Published Jun 24, 2026 · Assigned by GV
CVE-2026-12847GeoVision GV-I/O Box DVRSearch buffer overflow vulnerabilities in CMD_IP_SET command
Critical 10.0
In plain English
A critical-severity stack buffer overflow in GV-I/O Box 4E from GeoVision Inc.. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 49% of all known vulnerabilities).
Official 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);
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| GeoVision Inc. | GV-I/O Box 4E | V2.09 |
Weakness: CWE-121 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
References
- https://www.geovision.com.tw/cyber_security.php vendor-advisory
- https://talosintelligence.com/vulnerability_reports/TALOS-2026-2377 third-party-advisory