CVE-2026-57269 Overview
CVE-2026-57269 affects GeoVision GeoWebPlayer, an addon distributed with GeoVision products including GV-VMS and GV-Cloud. The component is referred to as Web Plugin in GV-VMS documentation and WS Player in VMS-Cloud deployments. GeoWebPlayer runs a local WebSocket server that extends the functionality of GeoVision web interfaces. The server accepts commands from localhost that include an index parameter used to reference internal arrays. The index value is not validated for range, allowing out-of-bounds array access when a crafted disconnect command is processed. The flaw is tracked under [CWE-129: Improper Validation of Array Index].
Critical Impact
Attackers who trick a user into visiting a malicious page can trigger out-of-bounds access in the local WebSocket server, leading to potential code execution, integrity loss, or denial of service.
Affected Products
- GeoVision GeoWebPlayer (Web Plugin)
- GeoVision GV-VMS with GeoWebPlayer addon installed
- GeoVision GV-Cloud / VMS-Cloud with WS Player
Discovery Timeline
- 2026-07-02 - CVE-2026-57269 published to NVD
- 2026-07-02 - Last updated in NVD database
Technical Details for CVE-2026-57269
Vulnerability Analysis
GeoWebPlayer instantiates a local WebSocket server that brokers commands between browser-based GeoVision interfaces and the underlying video management software. The server accepts JSON commands issued from localhost, several of which include an index field used to select elements in internal arrays. These arrays track client sessions, stream handles, and other critical state.
The disconnect command uses the attacker-supplied index value to reach into these arrays without validating that the value falls within allocated bounds. Supplying an index outside the valid range causes the server to dereference memory beyond the array, corrupting adjacent state or triggering an access violation. Because the same index handling pattern is applied to multiple commands, additional out-of-bounds paths exist across the command dispatcher.
Root Cause
The root cause is missing bounds validation on user-controlled indices, matching [CWE-129]. The command handler in GeoWebPlayer trusts the index value received on the WebSocket channel and uses it directly for array indexing. No upper-bound comparison or signed-value guard prevents access to memory outside the target array.
Attack Vector
The WebSocket server binds to localhost, so an attacker cannot connect directly across the network. Exploitation instead relies on user interaction: an attacker lures a victim running GeoWebPlayer to a controlled web page. JavaScript on that page opens a WebSocket connection to the local GeoWebPlayer service and issues a disconnect command with an out-of-range index. The scope change reflects the crossover from browser context into a privileged local process. Successful exploitation can corrupt process state, crash the service, or enable memory-level attack primitives.
Detailed technical analysis is available in the Talos Intelligence Vulnerability Report.
Detection Methods for CVE-2026-57269
Indicators of Compromise
- Unexpected crashes or restarts of the GeoWebPlayer process on endpoints running GeoVision software.
- Outbound browser sessions immediately followed by WebSocket connections to the GeoWebPlayer local port.
- Malformed or oversized index fields observed in WebSocket traffic to 127.0.0.1 on the GeoWebPlayer port.
Detection Strategies
- Monitor process telemetry for abnormal termination of the GeoWebPlayer WebSocket server.
- Inspect browser child-process behavior for connections targeting localhost services associated with GeoVision.
- Correlate web navigation events with subsequent localhost WebSocket traffic to identify drive-by exploitation attempts.
Monitoring Recommendations
- Log and retain WebSocket connection metadata from endpoints running GeoVision products.
- Alert on crash dumps or Windows Error Reporting events referencing GeoWebPlayer binaries.
- Track installed versions of GeoWebPlayer across the environment to prioritize patch coverage.
How to Mitigate CVE-2026-57269
Immediate Actions Required
- Inventory endpoints where GeoWebPlayer, Web Plugin, or WS Player is installed alongside GV-VMS or GV-Cloud.
- Apply the vendor update once available from the GeoVision Cyber Security Overview.
- Restrict browsing on hosts running GeoWebPlayer to trusted GeoVision management interfaces only.
Patch Information
GeoVision publishes security updates through its Cyber Security Overview portal. Administrators should track that page for a fixed GeoWebPlayer release addressing the improper index validation identified by Talos in TALOS-2026-2373.
Workarounds
- Uninstall GeoWebPlayer on systems that do not require the browser-based GeoVision interfaces.
- Stop and disable the GeoWebPlayer WebSocket service when interactive video management is not in active use.
- Use host firewall rules to block loopback access to the GeoWebPlayer port from browser processes on shared workstations.
# Example: disable the GeoWebPlayer service on Windows until a patch is applied
sc stop GeoWebPlayer
sc config GeoWebPlayer start= disabled
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
