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OS Command InjectionWeakness · CWE-78

CVE-2026-12850

CRITICAL · 9.1 CVSS v3.1 Published 2026-06-24
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
97/100
Remediation priority · Urgent
Remotely reachable Zero-click 8 weeks old

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
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_Gate_way command injection The following function takes a string as a gatewy 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_Gate_way(const char **this, char *gw, char *dev) { char s[324]; // [sp+4h] [bp-144h] BYREF if ( !dev && !*this || !gw ) return 0; system("/sbin/route del -net 224.0.0.0 netmask 224.0.0.0"); system("/sbin/route del default "); if ( dev ) sprintf(s, "/sbin/route add default gw %s dev %s", gw, dev); //attacker controlled gw string else sprintf(s, "/sbin/route add default gw %s dev %s", gw, *this); //attacker controlled gw string system(s); sprintf(s, "/sbin/route add -net 224.0.0.0 netmask 224.0.0.0 gw %s dev %s", gw, *this); //attacker controlled gw string system(s); return 1; }

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

Command injection vulnerability in CNetSetObj::m_F_n_Set_Gate_way within libNetSetObj.so on GeoVision GV-I/O Box 4E firmware 2.09. The gateway parameter is directly interpolated into shell commands via sprintf() and executed through system() without any input validation, allowing arbitrary OS command execution. The vulnerable function is exposed via the network-accessible DVRSearch service and Network.cgi endpoint.

MitigationRestrict network access to the DVRSearch service and Network.cgi endpoint using firewall rules until a vendor firmware patch is available. If immediate remediation is required, consider network segmentation to limit exposure to trusted management networks only.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify GeoVision GV-I/O Box 4E devices on your network
    Use network scanning, device inventory, or manufacturer utilities to locate GeoVision GV-I/O Box 4E devices. Check device model information via HTTP interface, SNMP, or manufacturer discovery tools.
    Affected if Devices running GeoVision GV-I/O Box 4E model are present on the network
  2. Verify firmware version is 2.09
    Access the device web interface or use firmware version checking commands via SNMP, telnet, or manufacturer utility to confirm the installed firmware version.
    Affected if Firmware version 2.09 is installed - this is the specific affected version per the CVE summary
  3. Confirm DVRSearch service is network-accessible
    Scan for open ports associated with DVRSearch service (check common ports or reference GeoVision documentation for the specific port). Use network scanning tools such as nmap to determine if the service is exposed to untrusted or external networks.
    Affected if DVRSearch service port is open and accessible from untrusted or external networks
  4. Verify Network.cgi endpoint accessibility
    Attempt HTTP/HTTPS access to Network.cgi on the device IP. Use curl or a browser to test if the endpoint responds and is reachable from untrusted networks.
    Affected if Network.cgi endpoint is accessible from untrusted or external networks

You are affected if you have GeoVision GV-I/O Box 4E devices running firmware version 2.09 with either the DVRSearch service or Network.cgi endpoint exposed to untrusted networks.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Restrict network access to the DVRSearch service and Network.cgi endpoint using firewall rules until a vendor firmware patch is available. If immediate remediation is required, consider network segmentation to limit exposure to trusted management networks only.

Have this fixed Scoped from the published advisory
  • Consultation6.0 h
  • Implementation20.0 h
  • Testing10.0 h
  • Review / QA6.0 h
42.0 hours of engineering $7,380
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-12850 in production — separate from our analysis above.

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What this is

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What belongs here
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  • Version or environment caveats, and links to real fixes
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