CVE-2026-88283 Overview
CVE-2026-88283 is a stack-based buffer overflow [CWE-121] in the GeoVision GV-LPC2211 license plate camera running firmware version V1.13. The device fails to limit repeated User elements in Open Network Video Interface Forum (ONVIF) CreateUsers requests. An authenticated administrator can send a crafted request containing many User elements to overwrite stack control state and crash the ONVIF worker process. Exploitation requires valid administrator credentials and produces a denial-of-service condition against the camera's ONVIF service.
Critical Impact
Authenticated administrators can crash the ONVIF worker process on GeoVision GV-LPC2211 cameras by sending malformed CreateUsers requests, disrupting video management and integration workflows that depend on the ONVIF interface.
Affected Products
- GeoVision GV-LPC2211 license plate camera
- Firmware version V1.13
- ONVIF service on the affected device
Discovery Timeline
- 2026-09-10 - CVE-2026-88283 published to the National Vulnerability Database
- 2026-09-10 - Last updated in NVD database
Technical Details for CVE-2026-88283
Vulnerability Analysis
The flaw resides in the ONVIF CreateUsers handler on the GV-LPC2211. The handler iterates over User elements supplied in the SOAP request and copies each entry into a fixed-size stack buffer. Because the parser does not enforce an upper bound on the number of repeated User elements, a request containing enough entries writes past the buffer boundary. The overflow overwrites adjacent stack control state, including saved registers and return metadata used by the ONVIF worker.
The issue is exploitable only by an authenticated user with administrator privileges, since CreateUsers is a privileged ONVIF operation. Successful exploitation crashes the ONVIF worker, disabling remote configuration and video management platform integrations until the service or device restarts.
Root Cause
The root cause is missing input length validation on a repeated SOAP element [CWE-121]. The ONVIF parser trusts the client-supplied count of User entries and copies each into a bounded stack region without checking whether the cumulative write exceeds buffer capacity. This is a classic stack overflow pattern where element cardinality, not element content, drives the overflow.
Attack Vector
An attacker authenticates to the device's ONVIF endpoint using administrator credentials. The attacker then issues a SOAP CreateUsers request over HTTP or HTTPS with an oversized array of User elements. The ONVIF worker parses the request, overruns the stack buffer, and terminates. The vulnerability is remotely reachable over the network wherever the ONVIF service is exposed.
No verified public exploit code is available. See the GeoVision Cyber Security Overview for vendor guidance.
Detection Methods for CVE-2026-88283
Indicators of Compromise
- Unexpected termination or restart of the ONVIF worker process on GV-LPC2211 cameras
- ONVIF CreateUsers SOAP requests containing an abnormally large number of User elements
- Loss of connectivity between video management systems and the affected camera immediately following a CreateUsers request
Detection Strategies
- Inspect HTTP and HTTPS traffic destined for ONVIF endpoints for SOAP bodies with repeated <User> child elements exceeding normal provisioning patterns
- Correlate authenticated ONVIF administrative activity with subsequent camera unavailability events
- Alert on repeated device reboots or ONVIF service restarts on GeoVision GV-LPC2211 devices
Monitoring Recommendations
- Log all administrator authentication events against the camera's ONVIF interface and review for unfamiliar source addresses
- Monitor camera availability from video management platforms and trigger alerts on repeated ONVIF timeouts
- Capture network traffic between management hosts and cameras during any suspected outage to preserve evidence of malformed SOAP payloads
How to Mitigate CVE-2026-88283
Immediate Actions Required
- Restrict network reachability of the GV-LPC2211 ONVIF service to trusted management hosts only
- Rotate administrator credentials on affected cameras and remove unused administrator accounts
- Review vendor advisories at the GeoVision Cyber Security Overview for firmware updates addressing this issue
Patch Information
At the time of publication, no fixed firmware version is listed in the NVD entry for CVE-2026-88283. Operators should monitor the GeoVision Cyber Security Overview for a firmware release that supersedes V1.13 on the GV-LPC2211 and apply it once available.
Workarounds
- Place cameras on a dedicated management VLAN and block ONVIF ports from general user networks
- Enforce strong, unique administrator passwords and disable default accounts on affected devices
- Use network access control lists to permit ONVIF CreateUsers requests only from authorized provisioning systems
# Example: restrict ONVIF access to a management subnet using iptables on an upstream gateway
iptables -A FORWARD -s 10.10.20.0/24 -d 10.20.30.40 -p tcp --dport 80 -j ACCEPT
iptables -A FORWARD -s 10.10.20.0/24 -d 10.20.30.40 -p tcp --dport 443 -j ACCEPT
iptables -A FORWARD -d 10.20.30.40 -p tcp --dport 80 -j DROP
iptables -A FORWARD -d 10.20.30.40 -p tcp --dport 443 -j DROP
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
