GeoVision GV-IO Box 4E up to 2.09/2.11 Send Message stack-based overflow

Summaryinfo

A vulnerability marked as critical has been reported in GeoVision GV-IO Box 4E up to 2.09/2.11. Impacted is an unknown function of the component Send Message Handler. Performing a manipulation results in stack-based overflow. This vulnerability is known as CVE-2026-12485. Remote exploitation of the attack is possible. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as very critical, was found in GeoVision GV-IO Box 4E up to 2.09/2.11. This affects an unknown code of the component Send Message Handler. The manipulation with an unknown input leads to a stack-based overflow vulnerability. CWE is classifying the issue as CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

GV-I/O Box 4E is a smart embedded device with 4 input and 4 relays output that can be controlled over Ethernet and RS-485. DVRSearch is a service running by default on the IOBox listening 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: #### IP field stack overflow The following code is vulnerable to a stack overflow that is attacker-controlled: v3 = strlen(g_network_config->ip_addr); memcpy(&reply_buf[36], g_network_config->ip_addr, v3);

The weakness was published by Philippe Laulheret. The advisory is shared at geovision.com.tw. This vulnerability is uniquely identified as CVE-2026-12485 since 06/17/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 06/24/2026).

Upgrading to version 2.12 eliminates this vulnerability.

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Productinfo

Vendor

• GeoVision

Name

• GV-IO Box 4E

Version

• 2.0
• 2.09
• 2.1
• 2.2
• 2.3
• 2.4
• 2.5
• 2.6
• 2.7
• 2.8
• 2.9
• 2.10
• 2.11

CPE 2.3info

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CPE 2.2info

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Entryinfo

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