CVE-2026-57265: GeoWebPlayer Out-of-Bounds Memory Access Vulnerability

Technical summary

GeoWebPlayer's WebSocket server accepts commands from localhost and other sources without proper validation of the `index` parameter used to access internal data structures and arrays. The `audio` command and likely others fail to validate that supplied index values remain within legitimate array bounds, enabling out-of-bounds memory access (CWE-129). An attacker can craft a malicious command with an arbitrary index to read, write, or corrupt memory regions outside the intended array, potentially executing code or escalating privileges within the context of the GeoVision application. The vulnerability is network-accessible and does not require prior authentication, though the CVSS vector suggests some complexity in exploit conditions or user interaction.

Business impact

Successful exploitation could allow an attacker to exfiltrate video footage, authentication credentials, or system configuration data stored in memory. An attacker could also modify recorded events, disable recordings, or manipulate access control lists within the GeoVision VMS or cloud platform. For organizations relying on GeoVision for security monitoring, this could undermine the integrity and confidentiality of security operations and create compliance violations for regulated environments.

Affected systems

The vulnerability affects GeoWebPlayer when installed as part of GeoVision's product ecosystem, including GV-VMS (Video Management System), GV-Cloud, and any derivative web interfaces that depend on the WebSocket server. Organizations using GeoVision surveillance or security monitoring solutions with the Web Plugin or WS Player components are in scope. The exact affected versions are not provided in available advisories; verify your GeoVision product version against vendor security bulletins.

Exploitability

The vulnerability is exploitable remotely over the network without requiring authentication. However, the CVSS vector (AC:H, UI:R) indicates that successful exploitation faces some complexity—likely stemming from the need for precise memory layout knowledge, specific GeoVision configuration states, or user-initiated actions that trigger the WebSocket communication. While not trivial, the barrier to exploitation is moderate; security researchers and well-resourced attackers could feasibly develop reliable exploits once patched versions are released and prior behavior is studied.

Remediation

Apply security patches from GeoVision as soon as they become available. In the interim, restrict network access to GeoWebPlayer's WebSocket port (verify your deployment for the specific port) using firewall rules, network segmentation, or access control lists. Disable the GeoWebPlayer plugin if not actively required for your web interface functionality. Monitor logs for unexpected WebSocket command patterns or index values that deviate from normal operations. Coordinate with your GeoVision vendor to understand recommended workarounds for your specific product and version.

Patch guidance

Check GeoVision's official security advisories and product update channels for patched versions. Patches typically involve adding bounds checking to the `index` parameter in the WebSocket command handler and validating array access before memory operations. Test patches in a staging environment before deploying to production surveillance systems, as any VMS update carries risk of service disruption. Document the patch version applied and track deployment across all affected GeoVision installations in your environment.

Detection guidance

Monitor WebSocket traffic to GeoWebPlayer for unusual command patterns, especially `audio` commands with unexpectedly large or negative index values. Implement intrusion detection rules that flag WebSocket frames containing index parameters outside the legitimate range for your GeoVision configuration. Check system and application logs for access violations, segmentation faults, or unexpected crashes in the GeoVision service processes. Use memory analysis and core dumps (if safe to collect) to confirm out-of-bounds access attempts. Network segmentation and logging of all WebSocket communication can provide forensic evidence of exploitation attempts.

Why prioritize this

This vulnerability scores 8.3 (HIGH) on the CVSS scale due to the combination of high impact across confidentiality, integrity, and availability, plus network accessibility without authentication. Although exploitability faces moderate complexity, the scope of potential damage—undermining the security posture of video surveillance and access control systems—warrants prioritization. Organizations should patch or mitigate this within 30–60 days, depending on the criticality of their GeoVision deployment and exposure to untrusted networks.

Risk score, explained

The CVSS:3.1 score of 8.3 reflects: (1) Network Attack Vector (AV:N)—the vulnerability is reachable over the network; (2) High Complexity (AC:H)—some barriers exist to successful exploitation, reducing likelihood; (3) No Privilege Required (PR:N)—the WebSocket server accepts unauthenticated commands; (4) User Interaction (UI:R)—exploit success may depend on system state or user actions; (5) Changed Scope (S:C)—the impact can extend beyond the vulnerable component; (6) High impact across Confidentiality, Integrity, and Availability (C:H, I:H, A:H)—memory corruption can lead to data theft, system modification, or crashes. The net result is a serious vulnerability that security teams must address promptly.

Frequently asked questions