CVE-2026-12851Network attack vector

Admin command execution via unsanitized DNS addresses

Published Jun 24, 2026 · Updated Jun 24, 2026

OS command injection in GeoVision GV-I/O Box 4E 2.09 allows remote authenticated users to execute commands through DNS settings. The CNetSetObj::m_F_n_Set_DNS_Addr function inserts attacker-controlled dns1 and dns2 strings into shell commands with sprintf and passes them to system without sanitization. High-privilege access to DVRSearch or Network.cgi is required; injected input then executes with the calling service's operating-system privileges.

CVSS severity9.1
Critical
EPSS probability2.70%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in GeoVision GV-I/O Box 4E 2.09 allows remote authenticated users to execute commands through DNS settings. The CNetSetObj::m_F_n_Set_DNS_Addr function inserts attacker-controlled dns1 and dns2 strings into shell commands with sprintf and passes them to system without sanitization. High-privilege access to DVRSearch or Network.cgi is required; injected input then executes with the calling service's operating-system privileges.

The record

CVE
CVE-2026-12851
Published
Jun 24, 2026
Updated
Jun 24, 2026
Vendor
GeoVision
Product
GV-I/O Box 4E
Classifications
CWE-78, T1059.004
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jun 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 24, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=V2.09

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

GeoVision · GV-I/O Box 4Eversion=V2.09

Published CVSS scores

9.1GeoVision Inc. (CNA)CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059.004Unix Shell

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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