CVE-2026-57277
HighCVSS 8.3Exploitation Probability (EPSS)
Low risk20th percentile — higher than 20% of all known CVEs
Summary
The GeoWebPlayer (Web Plugin/WS Player) addon for GeoVision software (GV-VMS, GV-Cloud) contains a buffer overflow vulnerability in the function handling the `connectionInfo` command. An attacker from localhost can send crafted JSON data that is copied into fixed-size buffers without length checking, causing overflow.
Risk Assessment
Buffer overflow may allow a local attacker to execute arbitrary code in the context of the WebSocket server process, potentially leading to system compromise, data leakage, or disruption of camera and surveillance systems.
Recommendation
Immediately update GeoVision software to a version containing the fix for CVE-2026-57277. Until the update is applied, restrict access to the WebSocket server to trusted local 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 key field