CVE-2026-57264: GeoWebPlayer Index Out-of-Bounds Vulnerability (CVSS 8.3)

Technical summary

CVE-2026-57264 is an improper input validation flaw (CWE-129: Improper Validation of Array Index) affecting the websocket server embedded in GeoWebPlayer. The plugin accepts various commands from localhost-originating connections, many of which include an index parameter used to reference array elements or control flow. The implementation does not sanitize or bounds-check these index values before dereferencing array structures, enabling out-of-bounds reads and writes. The setPIP command is explicitly mentioned as vulnerable, but the description suggests the pattern may affect multiple command handlers. Successful exploitation could lead to information disclosure or arbitrary code execution depending on memory layout and attack conditions.

Business impact

Organizations running GeoVision surveillance or management solutions with GeoWebPlayer enabled face risk of unauthorized access to video feeds, system configuration data, and potentially the ability to disable or manipulate recording and monitoring functions. In security-sensitive deployments—such as those in financial institutions, government facilities, or critical infrastructure—compromise of the surveillance system itself could enable physical security breaches. Additionally, if the vulnerability permits code execution, attackers could gain a foothold on systems running the vulnerable plugin, facilitating lateral movement or persistent access.

Affected systems

The vulnerability affects GeoWebPlayer when installed as an addon with GeoVision software including GV-VMS, GV-Cloud, and similar products. GeoWebPlayer is also referred to as "Web Plugin" in GV-VMS documentation and "WS Player" in VMS-Cloud contexts. Any deployment where the GeoWebPlayer websocket server is active and reachable is potentially at risk. Organizations should identify all systems where GeoWebPlayer has been deployed and assess network exposure.

Exploitability

The attack requires network access to the websocket server hosted by GeoWebPlayer; while the vulnerability description mentions localhost, the CVSS vector (AV:N) indicates network-accessible endpoints are involved in real-world deployments. Exploitation requires crafting a malicious command with an out-of-bounds index, a relatively straightforward task once the command structure is understood. The CVSS rating of 8.3 (HIGH severity) and the presence of user interaction (UI:R) in the vector suggest that practical exploitation may depend on circumstances such as user behavior or specific deployment configurations, but the flaw itself is not dependent on complex exploitation techniques. No public exploit code or active KEV designation is currently associated with this vulnerability.

Remediation

The primary remediation is to apply a patched version of GeoWebPlayer provided by GeoVision. Organizations should consult the vendor's security advisory for specific version numbers and availability of patches for their software version. In the interim, mitigations may include: restricting network access to the websocket server to trusted hosts only, isolating GeoVision systems on a segmented network, disabling GeoWebPlayer if it is not essential for operations, and monitoring for suspicious command patterns. However, these are compensating controls only; patching remains the definitive remedy.

Patch guidance

Contact GeoVision support or check the vendor's security advisory for patches applicable to your GV-VMS, GV-Cloud, or other affected product version. Patches should address input validation in the websocket command handlers, particularly the setPIP command and any other commands that accept index parameters. Before deploying patches, verify compatibility with your specific GeoVision software version and test in a non-production environment. After patching, confirm that the websocket server is restarted and that all index-based command handlers properly validate input ranges.

Detection guidance

Monitor websocket traffic to GeoWebPlayer for commands containing unusually large or negative index values, particularly setPIP commands with out-of-bounds parameters. If available, enable debug logging on the GeoVision application to capture websocket command details. Look for error patterns or crashes coinciding with suspicious command submissions. Network-based detection should focus on unusual spike in websocket connections or command frequency from internal or unexpected sources. Intrusion detection systems should be configured to alert on index values that exceed documented valid ranges for known commands.

Why prioritize this

This vulnerability warrants priority patching due to its HIGH CVSS score (8.3), the broad impact potential (confidentiality, integrity, and availability), and the critical nature of surveillance systems in many organizations. Although not yet on the KEV catalog, the combination of network accessibility and potential code execution makes it a lucrative target for attackers seeking to compromise physical security infrastructure. Organizations relying on GeoVision for security operations should treat this as urgent.

Risk score, explained

The CVSS 3.1 score of 8.3 reflects: (1) Network accessibility (AV:N) to the websocket server in real deployments; (2) High complexity (AC:H) suggesting some attack conditions are non-trivial; (3) No authentication required (PR:N); (4) User interaction required (UI:R) in the attack chain; (5) Changed scope (S:C), meaning the vulnerability can affect resources beyond the vulnerable component; and (6) High impact across all three security dimensions (C:H, I:H, A:H). This profile indicates a serious but not trivial vulnerability—difficult to exploit reliably in all scenarios, but with severe consequences when successful.

Frequently asked questions