CVE-2026-57276
Received Received - Intake

GeoWebPlayer WebSocket Buffer Overflow in ConnectionInfo

Publication date: 2026-07-02

Last updated on: 2026-07-02

Assigner: 0df08a0e-a200-4957-9bb0-084f562506f9

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 (key present)

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Meta Information

Published
2026-07-02
Last Modified
2026-07-02
Generated
2026-07-02
AI Q&A
2026-07-02
EPSS Evaluated
N/A
NVD
CVE-2026-57276
EUVD
EUVD-2026-41238

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
geovision geowebplayer *

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-120 The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.

Attack-Flow Graph

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Executive Summary

This vulnerability exists in GeoWebPlayer, an addon for GeoVision software that creates a websocket server to enhance web-interface capabilities. The server accepts commands from localhost, including one called 'connectionInfo' which provides camera connection details.

The vulnerability arises in the handler for the 'connectionInfo' command, named 'handle_connection_info'. This function copies attacker-controlled JSON strings into fixed-size buffers using manual byte-by-byte loops without enforcing length limits, leading to multiple instances of buffer overflow.

Impact Analysis

The buffer overflow vulnerability in the password field can lead to serious impacts including complete compromise of confidentiality, integrity, and availability of the affected system.

  • Confidentiality: An attacker may gain unauthorized access to sensitive information.
  • Integrity: The attacker could manipulate or corrupt data.
  • Availability: The system or service could be disrupted or rendered unavailable.

The CVSS score of 8.3 indicates a high severity vulnerability that can be exploited remotely with high impact, although it requires high attack complexity and user interaction.

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