CVE-2026-12847 GeoVision GV-I/O Box DVRSearch buffer overflow vulnerabilities in CMD_IP_SET command
A stack-based buffer overflow in the DVRSearch service allows remote attackers to execute arbitrary code via crafted UDP messages.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-12847?
CVE-2026-12847 is a critical memory corruption vulnerability in GeoVision Inc. GV-I/O Box 4E, published on 24 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
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);
Weakness: CWE-121
Which versions are affected by CVE-2026-12847?
How do I fix CVE-2026-12847?
No fix has been published for CVE-2026-12847 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-12847 being exploited?
There is no known exploitation of CVE-2026-12847 in the wild and no public exploit code.
Sources
Also known as GHSA-6hhf-75q4-5pc2.