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CVE-2026-12851 is a critical OS command injection vulnerability affecting GeoVision GV-I/O Box 4E version 2.09. The flaw resides in the internal library libNetSetObj.so, specifically in the function CNetSetObj::m_F_n_Set_DNS_Addr, which is used by device components to configure DNS settings as part of broader network stack management. The function accepts up to two DNS address parameters, incorporates those values directly into shell command strings using sprintf, and executes the resulting commands via system() without sanitizing attacker-controlled input. Because the vulnerable routine is reachable through the network-exposed DVRSearch service and the Network.cgi endpoint, a remote attacker can supply crafted DNS parameter values in a network request and inject arbitrary shell metacharacters or commands. Successful exploitation results in command execution on the underlying operating system of the device.
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No public exploit code observed for this vulnerability.
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6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An OS command injection vulnerability in GeoVision products.
A critical OS command injection vulnerability in the libNetSetObj.so functionality of GeoVision GV-I/O Box 4E 2.09 that can allow remote command execution via specially crafted network requests.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.