CVE-2026-57274 – GeoVision GeoWebPlayer Websocket Server connectInfo handler stack-based buffer overflow vulnerability

CVE ID :CVE-2026-57274

Published : July 2, 2026, 2:24 a.m. | 1 hour, 22 minutes ago

Description :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 (no key present)

Severity: 8.3 | HIGH

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