CVE-2026-88268 in GV-LPC2211
Summary
by MITRE • 09/10/2026
GeoVision GV-LPC2211 V1.13 contains an authenticated stack buffer overflow in SSVR fragment reassembly that allows a valid user to crash the SSVR service.
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Analysis
by VulDB Data Team • 09/10/2026
The vulnerability identified in GeoVision GV-LPC2211 firmware version 1.13 represents a critical security flaw within the Secure Video Streaming Relay (SSVR) component, specifically during the process of fragment reassembly for incoming network packets. This issue is classified as an authenticated stack buffer overflow, which indicates that while the attacker must possess valid credentials to exploit the vulnerability, the resulting impact allows for complete denial of service against the video surveillance infrastructure. The flaw resides in how the SSVR service handles segmented data streams, a common mechanism used to transmit large volumes of video or configuration data over network connections by breaking them into smaller, manageable chunks that are reassembled at the destination.
From a technical perspective, the vulnerability stems from insufficient boundary checks during the memory allocation and copying operations associated with fragment reassembly. When the SSVR service receives fragmented packets, it attempts to reconstruct the original payload in a stack-allocated buffer. However, due to improper validation of the total size or length fields within the packet headers, an authenticated user can craft specific sequences of fragments that exceed the allocated stack space. This causes data to overwrite adjacent memory locations on the call stack, including return addresses and saved frame pointers. While exploitation for arbitrary code execution is theoretically possible depending on the compiler's stack protection mechanisms such as stack canaries or Address Space Layout Randomization (ASLR), the primary observed impact in this context is a service crash resulting from corrupted control flow data that prevents normal program execution.
The operational impact of this vulnerability is significant for organizations relying on GeoVision surveillance systems, particularly those using the GV-LPC2211 model with version 1.13 firmware. Since exploitation requires authentication, it poses an insider threat or a risk to accounts compromised through other means such as phishing or credential stuffing attacks. Once triggered, the crash of the SSVR service disrupts video streaming capabilities, leading to gaps in surveillance coverage and potential loss of critical evidence during recording sessions. In high-security environments where continuous monitoring is mandatory, this denial-of-service condition can create dangerous blind spots that adversaries could exploit for physical intrusion or sabotage activities without detection by automated systems.
This vulnerability aligns with Common Weakness Enumeration (CWE) ID 121, which describes a stack-based buffer overflow occurring when data exceeds the bounds of the fixed-size stack memory allocation. It also maps to MITRE ATT&CK technique T1498, Network Denial of Service, specifically under the sub-technique for resource exhaustion through service disruption. The authentication requirement places it in the context of authenticated attacks where an adversary leverages existing access privileges to degrade system availability rather than seeking immediate privilege escalation or data exfiltration.
Mitigation strategies should prioritize updating the firmware on all affected GV-LPC2211 devices to a patched version released by GeoVision that addresses the buffer validation logic within the SSVR fragment reassembly module. In cases where immediate patching is not feasible, network segmentation can help isolate surveillance equipment from general corporate networks, limiting exposure to internal threats. Additionally, implementing strict input validation and length checks at the application layer for all incoming fragmented streams is essential. Security teams should also enforce strong password policies and multi-factor authentication to reduce the risk of credential compromise that could lead to exploitation of this authenticated vulnerability. Regular monitoring of system logs for unexpected service restarts or crashes can aid in early detection of attempted exploits, allowing administrators to respond before significant operational disruption occurs.