CVE-2026-57276: GeoVision GeoWebPlayer Websocket Server connectInfo handler stack-based buffer overflow vulnerability
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 callhandleconnectioninfo contains multiple instances of string copy that can overflow. The function handleconnectinfo 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)
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
GeoVision GeoWebPlayer Websocket Server connectInfo handler (Web Plugin / WS Player)to a version that resolves this vulnerability.Fixed in V1.1.3.0
Event History
Frequently Asked Questions
What is the severity of CVE-2026-57276?
The severity of CVE-2026-57276 is rated high with a CVSS score of 8.3.
How do I fix CVE-2026-57276?
To fix CVE-2026-57276, update the GeoVision GeoWebPlayer Websocket Server to the latest version provided by the vendor.
What type of vulnerability is CVE-2026-57276?
CVE-2026-57276 is a stack-based buffer overflow vulnerability affecting the GeoWebPlayer Websocket Server.
What software is affected by CVE-2026-57276?
CVE-2026-57276 affects the GeoVision GeoWebPlayer Websocket Server, which is used with various GeoVision software.
What are the potential impacts of CVE-2026-57276?
The potential impacts of CVE-2026-57276 include remote code execution and denial of service due to the buffer overflow.