CVE-2026-57873: GeoVision Camera NULL Pointer Dereference DoS Vulnerability

Technical summary

The vulnerability is a NULL pointer dereference (CWE-476) in the IEEE8021x_upload.cgi component of affected GeoVision devices. The flaw stems from insufficient validation of multipart upload request headers, specifically in code paths handling certificate uploads. When the CGI process receives a malformed multipart request lacking proper header validation, it attempts to dereference a NULL pointer, causing an unhandled exception and process termination. The attack is trivial to execute: no special privileges, no user interaction, and no complex exploit mechanics are required—a single crafted HTTP POST request triggers the crash.

Business impact

Organizations deploying GeoVision network surveillance cameras as part of their physical security infrastructure face potential service disruption. Because the vulnerability causes the affected CGI process to crash, it can interrupt certificate management, authentication mechanisms tied to 802.1X (IEEE 802.1X), and potentially other administrative functions depending on the device architecture. Repeated attacks could degrade camera availability and complicate incident response or access control operations. In facilities relying on continuous video surveillance for security, intermittent unavailability of camera management functions may have operational consequences.

Affected systems

The vulnerability affects GeoVision GV-LPC2011 and GV-LPC2211 network cameras running firmware version 1.12 and earlier. These are fixed-position or compact form-factor IP cameras commonly used in small-to-medium enterprise and education deployments. Organizations should identify any instances of these exact models in their environment and note their current firmware versions to determine exposure.

Exploitability

Exploitability is straightforward. The attack requires no authentication, no user interaction, and minimal network access—only the ability to send an HTTP POST request to the vulnerable CGI endpoint. No specialized tools or deep technical knowledge are needed; a basic HTTP client and knowledge of the multipart form structure suffice. The low attack complexity and lack of privilege requirements make this a readily exploitable flaw. However, practical impact is limited to denial of service; confidentiality and integrity are not affected.

Remediation

Upgrade affected GeoVision devices to a firmware version later than 1.12. Organizations should contact GeoVision support or consult the vendor advisory to confirm the availability and correct version number for each model. If an upgrade is not immediately available or feasible, implement network-level controls such as access control lists (ACLs) or firewall rules restricting access to the device's web interface (typically port 80/443) to authorized administrative networks only. This does not eliminate the vulnerability but significantly reduces exposure surface.

Patch guidance

Firmware updates for GeoVision GV-LPC2011 and GV-LPC2211 should be available from the vendor. Consult the official GeoVision support portal or advisory for the appropriate patched firmware version for your specific model and region. Before deploying any firmware update, follow standard change management practices: test in a non-production environment, back up current configuration, and plan for brief device downtime if required. Verify the update success by confirming the new firmware version in the device's administration interface.

Detection guidance

Monitor network traffic for HTTP POST requests to the IEEE8021x_upload.cgi endpoint on affected devices, particularly those with malformed or incomplete multipart headers. Intrusion detection systems (IDS) and web application firewalls (WAF) can be tuned to flag anomalous multipart uploads lacking proper Content-Disposition or Content-Type headers in the certificate upload context. Additionally, monitor system logs on the affected devices for CGI process crashes or restarts; repeated crashes at the same time or following similar traffic patterns may indicate active exploitation attempts. Review access logs to the device's web interface to identify unexpected or unauthorized access attempts to administrative endpoints.

Why prioritize this

This vulnerability merits HIGH priority based on its network-exploitable nature, lack of authentication requirement, and high availability impact. The CVSS 7.5 score reflects the severe accessibility but limited scope (denial of service only). Prioritize remediation for devices exposed to untrusted networks; devices restricted to internal administrative networks should be patched on a standard update cycle unless they are in critical security infrastructure.

Risk score, explained

The CVSS 3.1 score of 7.5 (HIGH) reflects an unauthenticated, low-complexity network attack that causes high availability impact (process crash). The vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H shows no requirement for local access, credentials, or user interaction, and impact is confined to availability (A:H). Confidentiality and integrity scores are zero because the flaw does not expose or corrupt data; it only disrupts service. The score appropriately penalizes broad attack surface while acknowledging limited scope of harm.

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