CVE-2026-12851: CWE-78 Improper neutralization of special elements used in an OS command ('OS command injection') in GeoVision Inc. GV-I/O Box 4E
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_DNS_Addr command injection The following function can take up to two addresses, performs no sanitization and then 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_DNS_Addr(CNetSetObj *this, char *dns1, char *dns2) { int result; // r0 char v5[80]; // [sp+0h] [bp-50h] BYREF if ( !dns1 ) result = 0; if ( dns1 ) { sprintf(v5, "/bin/echo nameserver %s > /etc/resolv.conf", dns1); // attacker controlled dns1 field system(v5); if ( dns2 ) { sprintf(v5, "/bin/echo nameserver %s >> /etc/resolv.conf", dns2); system(v5); } return 1; } return result;
AI Analysis
Technical Summary
This vulnerability involves multiple OS command injection flaws in the libNetSetObj.so component of GeoVision GV-I/O Box 4E version 2.09. The function CNetSetObj::m_F_n_Set_DNS_Addr accepts up to two DNS addresses without sanitization and uses sprintf to construct shell commands that are executed via system(). Because the inputs are attacker-controlled and unsanitized, an attacker can inject arbitrary commands. The vulnerable function is accessible through the network-exposed DVRSearch service and the Network.cgi endpoint, enabling remote exploitation via crafted network requests.
Potential Impact
Successful exploitation allows an attacker with network access and high privileges to execute arbitrary OS commands on the affected device, leading to complete compromise of confidentiality, integrity, and availability. This can result in full system control, data manipulation, or denial of service.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict network access to the affected services (DVRSearch and Network.cgi) to trusted users only. Monitor for unusual network activity targeting these endpoints. Avoid exposing the device directly to untrusted networks.
CVE-2026-12851: CWE-78 Improper neutralization of special elements used in an OS command ('OS command injection') in GeoVision Inc. GV-I/O Box 4E
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_DNS_Addr command injection The following function can take up to two addresses, performs no sanitization and then 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_DNS_Addr(CNetSetObj *this, char *dns1, char *dns2) { int result; // r0 char v5[80]; // [sp+0h] [bp-50h] BYREF if ( !dns1 ) result = 0; if ( dns1 ) { sprintf(v5, "/bin/echo nameserver %s > /etc/resolv.conf", dns1); // attacker controlled dns1 field system(v5); if ( dns2 ) { sprintf(v5, "/bin/echo nameserver %s >> /etc/resolv.conf", dns2); system(v5); } return 1; } return result;
CVSS v3.1
Score 9.1critical
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves multiple OS command injection flaws in the libNetSetObj.so component of GeoVision GV-I/O Box 4E version 2.09. The function CNetSetObj::m_F_n_Set_DNS_Addr accepts up to two DNS addresses without sanitization and uses sprintf to construct shell commands that are executed via system(). Because the inputs are attacker-controlled and unsanitized, an attacker can inject arbitrary commands. The vulnerable function is accessible through the network-exposed DVRSearch service and the Network.cgi endpoint, enabling remote exploitation via crafted network requests.
Potential Impact
Successful exploitation allows an attacker with network access and high privileges to execute arbitrary OS commands on the affected device, leading to complete compromise of confidentiality, integrity, and availability. This can result in full system control, data manipulation, or denial of service.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict network access to the affected services (DVRSearch and Network.cgi) to trusted users only. Monitor for unusual network activity targeting these endpoints. Avoid exposing the device directly to untrusted networks.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GV
- Date Reserved
- 2026-06-22T00:42:28.790Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a3b667deed863c81e4ac1ae
Added to database: 06/24/2026, 05:09:17 UTC
Last enriched: 06/24/2026, 05:24:05 UTC
Last updated: 08/07/2026, 19:51:50 UTC
Views: 163
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