CVE-2026-12849: GeoVision GV-I/O Box 4E libNetSetObj.so OS command injection vulnerability

Multiple OS command injection vulnerabilities exist in the libNetSetObj.so functionality of GeoVision GV-I/O Box 4E 2.09. A specially crafted network packet can lead to command execution. An attacker can send a network request to trigger this vulnerability.

libNetSetObj.so is an internal library used by various binaries on the device to configure the network stack (start and stop various services, configure IP, Netmask, gateway, dns, etc.)

CNetSetObj::mFnSetNetMask command injection

The following function takes a string as a net mask address, performs no sanitization on it and calls system. This is a classic command injection vulnerability. The function is reachable from both the network-exposed DVRSearch service and the Network.cgi endpoint.

int fastcall CNetSetObj::mFnSetNetMask(const char this, char netmaskaddr)

{

bool v2; // zf

char v4[72]; // [sp+0h] [bp-48h] BYREF

v2 = this == 0;

if ( this )

v2 = netmaskaddr == 0;

if ( v2 )

return 0;

sprintf(v4, "/sbin/ifconfig %s netmask %s", this, netmaskaddr); // attacker controlled netmaskaddr

system(v4);

return 1;

}