CVE-2026-12849 GeoVision GV-I/O Box 4E libNetSetObj.so OS command injection vulnerability
An attacker can execute arbitrary OS commands on GeoVision GV-I/O Box 4E devices by sending a specially crafted network packet to the network configuration service.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-12849?
CVE-2026-12849 is a critical command injection vulnerability in GeoVision Inc. GV-I/O Box 4E, published on 24 Jun 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
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::m_F_n_Set_Net_Mask 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::m_F_n_Set_Net_Mask(const char **this, char *netmask_addr)
{
bool v2; // zf
char v4[72]; // [sp+0h] [bp-48h] BYREF
v2 = *this == 0;
if ( *this )
v2 = netmask_addr == 0;
if ( v2 )
return 0;
sprintf(v4, "/sbin/ifconfig %s netmask %s", *this, netmask_addr); // attacker controlled netmask_addr
system(v4);
return 1;
}
Weakness: CWE-78
Which versions are affected by CVE-2026-12849?
How do I fix CVE-2026-12849?
No fix has been published for CVE-2026-12849 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-12849 being exploited?
There is no known exploitation of CVE-2026-12849 in the wild and no public exploit code.
Sources
Also known as GHSA-vrqf-28p4-6h8f.