CVE-2026-57875: GeoVision Camera NULL Pointer Crash – Denial of Service Vulnerability

Technical summary

The vulnerability is a NULL pointer dereference (CWE-476) in the HTTP request parsing logic of multiple CGI components within affected GeoVision devices. The root cause is insufficient validation of required HTTP request metadata before dereferencing pointers. When a specially crafted HTTP request arrives without proper metadata, the parsing routine attempts to access memory that has not been initialized or validated, triggering a crash of the affected process. The flaw is unauthenticated and requires no special privileges to exploit.

Business impact

Deployments of these GeoVision cameras in surveillance or monitoring roles will experience service outages if attacked. Organizations relying on continuous video feeds for security, facility monitoring, or compliance purposes face operational disruption and potential blind spots. The impact is availability-focused rather than confidentiality or integrity; no user data or system configuration is compromised by this vulnerability itself. However, repeated or sustained attacks could create a pattern of denial of service affecting business continuity.

Affected systems

GeoVision GV-LPC2011 and GV-LPC2211 network cameras running firmware version V1.12 and earlier are vulnerable. Later firmware versions are not mentioned in the advisory, implying updates may be available. Organizations should verify the exact firmware version installed on each device in their environment.

Exploitability

Exploitability is straightforward and does not require authentication, specialized network position, or user interaction. The attack vector is network-based, and the complexity is low—any remote attacker can send a malformed HTTP request to the camera's web service. The barrier to exploitation is minimal, making this vulnerability practically exploitable by any entity with network access to the affected devices. No public exploit code status is indicated, but the simplicity of the flaw suggests potential rapid weaponization if details become widely known.

Remediation

Firmware updates resolving this vulnerability are the primary remediation path. Organizations should contact GeoVision for guidance on available patches for their specific camera models and check the manufacturer's support portal for firmware version numbering and availability. Until patches are applied, network segmentation and access controls should restrict direct HTTP access to these cameras to trusted administrative networks only.

Patch guidance

Verify the current firmware version on each affected device through the camera's administrative interface. GeoVision firmware updates are typically applied through the device's web interface or management platform. Consult the vendor's official advisory and release notes to identify which firmware version resolves CVE-2026-57875 and confirm compatibility with your deployment. Test updates in a non-production environment first, as firmware changes can affect video streaming or integration with existing systems. Document the update process and maintain backups of current configurations before upgrading.

Detection guidance

Monitor for HTTP requests sent to affected cameras that contain malformed or missing required metadata fields in the HTTP header. Look for log entries showing CGI process crashes or unexpected restarts on these devices. Network-based detection could involve analyzing HTTP traffic for requests lacking standard headers (Host, User-Agent, Content-Length, etc.) sent to the camera's web service. Endpoint detection on the camera itself—if available—should flag process crashes in the web service daemon. Correlate any service restarts with external network activity to identify attack attempts.

Why prioritize this

This vulnerability scores 7.5 CVSS (HIGH) due to its network accessibility, lack of authentication requirement, and direct denial of service impact on availability. While not listed on the CISA Known Exploited Vulnerabilities catalog, the straightforward nature of NULL pointer dereference exploits and the public disclosure merit treating this as a near-term security concern. Organizations with internet-facing GeoVision cameras or cameras in untrusted network segments should prioritize patching. Even cameras on internal networks face risk from insider threats or lateral movement by compromised systems.

Risk score, explained

The CVSS 3.1 score of 7.5 (HIGH) reflects: network accessibility (AV:N) allows remote exploitation without physical access; low attack complexity (AC:L) means standard tools and methods suffice; no authentication (PR:N) or user interaction (UI:N) is required; the scope is unchanged (S:U), limiting blast radius; and high availability impact (A:H) results from process crashes. The lack of confidentiality or integrity impact (C:N, I:N) prevents a critical rating, but the ease of exploitation and direct service disruption justify the HIGH severity designation.

Frequently asked questions