CVE-2026-88289 Overview
CVE-2026-88289 is a stack-based buffer overflow [CWE-121] affecting the GeoVision GV-LPC2211 license plate capture device running firmware version V1.14 (260903). Multiple VLSVR request handlers copy attacker-controlled variable-length fields into fixed-size stack buffers without validating input length. An unauthenticated remote attacker can send crafted VLSVR requests to crash the VLSVR service, producing a denial-of-service condition on the affected camera.
Critical Impact
Unauthenticated remote attackers can crash the VLSVR service on GeoVision GV-LPC2211 devices by sending malformed VLSVR requests over the network, disrupting availability of the license plate capture appliance.
Affected Products
- GeoVision GV-LPC2211 license plate capture device
- Firmware version V1.14 (260903)
- Any deployment exposing the VLSVR service to untrusted networks
Discovery Timeline
- 2026-09-10 - CVE-2026-88289 published to NVD
- 2026-09-10 - Last updated in NVD database
Technical Details for CVE-2026-88289
Vulnerability Analysis
The GV-LPC2211 exposes a proprietary network service known as VLSVR, which processes structured requests containing variable-length fields. Multiple request handlers within this service allocate fixed-size buffers on the stack and then copy attacker-supplied field contents into those buffers without first checking the declared or actual field length. When the incoming field exceeds the destination buffer size, adjacent stack memory is overwritten, corrupting saved registers and return addresses. The result is a service crash and loss of availability for the license plate capture function.
Because the flaw resides in a network-reachable service and requires no authentication or user interaction, exploitation reduces to sending a single malformed request. The public description confirms an impact on availability only, consistent with a denial-of-service outcome rather than confirmed code execution.
Root Cause
The root cause is missing bounds validation on attacker-controlled length fields prior to buffer copy operations, classified under [CWE-121] Stack-based Buffer Overflow. VLSVR handlers trust the size or terminator of inbound fields and rely on unsafe copy semantics into locally scoped fixed-size buffers.
Attack Vector
The attack vector is network-based. An attacker with reachability to the VLSVR listening port on the device sends a crafted VLSVR request in which one or more variable-length fields exceed the size expected by the vulnerable handler. Processing the oversized field corrupts the stack frame and terminates the VLSVR process. No credentials, prior foothold, or victim interaction are required.
No verified proof-of-concept code has been published. See the GeoVision Cyber Security Information advisory for vendor-supplied technical details.
Detection Methods for CVE-2026-88289
Indicators of Compromise
- Unexpected termination or repeated restarts of the VLSVR process on GV-LPC2211 devices.
- Inbound VLSVR protocol traffic from untrusted or unexpected source addresses.
- Loss of license plate capture telemetry or gaps in event upload from affected cameras.
Detection Strategies
- Monitor VLSVR service health and process uptime on GV-LPC2211 devices for crash-restart patterns.
- Inspect network traffic to the device for VLSVR requests containing abnormally long variable-length fields.
- Correlate device availability alerts with firewall or IDS logs to identify potentially malicious sources.
Monitoring Recommendations
- Ingest device syslog, network flow, and VMS availability events into a centralized SIEM for correlation.
- Alert on repeated TCP resets, connection failures, or reboot events tied to the VLSVR port.
- Track access attempts to management interfaces from outside authorized management subnets.
How to Mitigate CVE-2026-88289
Immediate Actions Required
- Restrict network access to the GV-LPC2211 VLSVR service so that only authorized management hosts can reach it.
- Place affected cameras on isolated VLANs and block inbound access from the internet and general user networks.
- Review vendor guidance and apply firmware updates as soon as GeoVision publishes a fix.
Patch Information
At the time of publication, refer to the GeoVision Cyber Security Information page for authoritative firmware release details and remediation status for GV-LPC2211 V1.14 (260903).
Workarounds
- Enforce firewall or ACL rules restricting VLSVR access to a small allowlist of management IP addresses.
- Disable remote administrative access from untrusted networks and require VPN for camera management.
- Segment IP camera infrastructure from corporate and internet-facing networks to reduce exposure.
# Example: restrict access to the VLSVR port on an upstream firewall
# Replace VLSVR_PORT, MGMT_SUBNET, and CAMERA_IP with site-specific values
iptables -A FORWARD -p tcp -s MGMT_SUBNET -d CAMERA_IP --dport VLSVR_PORT -j ACCEPT
iptables -A FORWARD -p tcp -d CAMERA_IP --dport VLSVR_PORT -j DROP
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
