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PatchSiren cyber security CVE debrief

CVE-2026-12485 GeoVision Inc. CVE debrief

CVE-2026-12485 is a critical stack overflow vulnerability in the GV-I/O Box 4E, a smart embedded device with 4 input and 4 relays output that can be controlled over Ethernet and RS-485. The vulnerability exists in the DVRSearch service, which runs by default on the IOBox and listens for UDP messages on port 10001. Any user on the network can send messages to this service and interact with it. Upon receiving a UDP message, the server reads at most 1460 bytes into a local buffer and a pointer to the buffer is stored in a global variable. The code is vulnerable to a stack overflow that is attacker-controlled due to the use of strlen and memcpy functions without proper bounds checking.

Vendor
GeoVision Inc.
Product
GV-I/O Box 4E
CVSS
CRITICAL 10
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-24
Original CVE updated
2026-06-25
Advisory published
2026-06-24
Advisory updated
2026-06-25

Who should care

Organizations using the GV-I/O Box 4E device should prioritize patching this vulnerability to prevent potential attacks. The vulnerability's critical severity and ease of exploitation make it a high-risk issue. Additionally, security teams and administrators responsible for IoT devices and network security should be aware of this vulnerability and take necessary precautions.

Technical summary

The CVE-2026-12485 vulnerability is caused by a stack overflow in the DVRSearch service of the GV-I/O Box 4E device. The service listens for UDP messages on port 10001 and reads up to 1460 bytes into a local buffer without proper bounds checking. An attacker can exploit this vulnerability by sending a specially crafted UDP message, potentially leading to remote code execution. The vulnerability has a CVSS score of 10 and a severity of CRITICAL.

Defensive priority

High priority should be given to patching this vulnerability, as it has a critical severity score and can be easily exploited by an attacker on the network. Immediate action is recommended to prevent potential attacks.

Recommended defensive actions

  • Apply the vendor-provided patch or update as soon as possible.
  • Limit access to the GV-I/O Box 4E device to only necessary personnel and networks.
  • Monitor network traffic for suspicious UDP messages on port 10001.
  • Implement additional security controls, such as intrusion detection and prevention systems, to detect and block potential attacks.
  • Conduct regular vulnerability assessments and penetration testing to identify and address potential security issues.

Evidence notes

The CVE-2026-12485 vulnerability was reported by Talos Intelligence and is publicly disclosed. The vulnerability details are based on the NVD and CVE records. However, some information about the affected product and vendor is still unknown or not publicly disclosed.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-12485 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-12485

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-12485 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-12485

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source reference

    Unverified legacy reference

    URL: https://talosintelligence.com/vulnerability_reports/TALOS-2026-2377

    0df08a0e-a200-4957-9bb0-084f562506f9

  • Source reference

    Unverified legacy reference

    URL: https://www.geovision.com.tw/cyber_security.php

    0df08a0e-a200-4957-9bb0-084f562506f9

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.