CVE-2026-57276
HighCVSS 8.3Exploitation Probability (EPSS)
Low risk20th percentile — higher than 20% of all known CVEs
Summary
A buffer overflow vulnerability in GeoWebPlayer (Web Plugin) allows an attacker from localhost to execute code by sending a crafted WebSocket request with an overly long 'password' field. The handle_connection_info function copies data into fixed-size buffers without length checks, causing overflow.
Risk Assessment
An attacker with localhost access can take over the WebSocket server, potentially leading to privilege escalation, data leakage, or disruption of the video surveillance system.
Recommendation
Immediately update GeoWebPlayer to the latest version from GeoVision and restrict localhost access to trusted processes only.
Original NVD description (English source)
GeoWebPlayer (also called "Web Plugin" in the GV-VMS documentation and "WS Player" for VMS-Cloud) is an addon that can be installed with various GeoVision software (GV-VMS, GV-Cloud, ...). It creates a websocket server that expands the capabilities of the various web-interfaces provided by the GeoVision software and may be necessary for them to function properly. The Websocket server can accept various commands coming from localhost. One of them, `connectionInfo` is meant to provide the necessary details to connect to a camera. The handler associated with this command that we call`handle_connection_info` contains multiple instances of string copy that can overflow. The function `handle_connect_info` copies attacker-controlled JSON strings into fixed-size buffers using manual byte-by-byte loops that do not enforce length limits. #### Buffer Overflow in password field (key present)