CVE-2026-88287 in GV-LPC2011
Summary
by MITRE • 09/10/2026
GeoVision GV-LPC2211 V1.13 fails to bound the number of Scopes tokens in unauthenticated ONVIF WS-Discovery Probe requests, allowing a remote attacker to corrupt stack control state and crash the discovery process.
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Analysis
by VulDB Data Team • 09/10/2026
The vulnerability identified in GeoVision GV-LPC2211 firmware version V1.13 represents a critical failure in input validation within the device's network service implementation. Specifically, the flaw resides in the handling of Unauthenticated ONVIF WS-Discovery Probe requests. The Open Network Video Interface Forum (ONVIF) standard utilizes Web Services - Discovery (WS-Discovery), an XML-based protocol that allows devices to discover each other on a local area network. This process typically involves clients sending probe messages and receiving responses from compatible devices. In this specific instance, the firmware fails to enforce proper bounds checking on the number of Scopes tokens included in these incoming requests. Scopes are URI strings used by WS-Discovery to filter which services or device types should respond to a probe request. By allowing an unbounded quantity of these tokens, the system exposes itself to memory corruption risks that can be exploited remotely without any form of authentication.
From a technical perspective, this vulnerability is classified as CWE-120: Buffer Copy without Checking Size of Input (Classic Buffer Overflow). The underlying mechanism involves the application allocating stack space based on expected or default limits for scope tokens but failing to verify if the actual input exceeds these allocated boundaries. When an attacker crafts a malicious WS-Discovery probe message containing an excessively large number of Scopes tokens, the data written into the buffer overwrites adjacent memory locations on the call stack. This overflow corrupts critical control structures such as return addresses or frame pointers. The immediate operational consequence is the corruption of stack control state, which leads to a crash of the discovery process service. While this specific description highlights denial-of-service through application crashes, improper handling of stack buffers often opens pathways for arbitrary code execution if an attacker can precisely manipulate the overwritten memory contents to redirect program flow.
The impact on system availability and integrity is significant for environments relying on ONVIF-compliant surveillance infrastructure. The crash of the discovery process disrupts network visibility, preventing legitimate clients from locating or managing video devices via standard protocols. This denial-of-service condition effectively blinds administrators to the status of connected endpoints within that subnet segment. Furthermore, because the vulnerability exists in an unauthenticated service handler, any host on the same local network can trigger this instability. There is no need for valid credentials or prior interaction with the device, making it a low-barrier attack vector for malicious actors seeking to disrupt surveillance operations or potentially probe for further exploitation vectors related to stack-based buffer overflows.
Mitigation strategies should prioritize immediate patching if an updated firmware version addressing this input validation flaw is available from GeoVision. In cases where patching is not immediately feasible, network segmentation offers a robust defensive control. By restricting access to the ONVIF WS-Discovery ports (typically UDP port 3702) using firewall rules or Access Control Lists, organizations can limit exposure only to trusted management subnets. Additionally, deploying intrusion detection systems configured with signatures for anomalous XML parsing behavior or excessive token counts in SOAP/WS-Discovery messages can help identify and block exploitation attempts before they reach the vulnerable service layer. Regular auditing of ONVIF device configurations against industry standards such as CWE-20: Improper Input Validation is recommended to ensure that similar boundary checks are correctly implemented across all network-facing services.