CVE-2026-57278
Deferred Deferred - Pending Action

Buffer Overflow in GeoWebPlayer WebSocket Server

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 ip field

CVSS Scores

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Meta Information

Published
2026-07-02
Last Modified
2026-07-02
Generated
2026-07-22
AI Q&A
2026-07-02
EPSS Evaluated
2026-07-21
NVD
CVE-2026-57278
EUVD
EUVD-2026-41240

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

The vulnerability exists in GeoWebPlayer, an addon for GeoVision software, which creates a websocket server to enhance web-interface capabilities. The server accepts commands from localhost, including one called `connectionInfo` that provides camera connection details. The handler for this command, `handle_connection_info`, improperly copies attacker-controlled JSON strings into fixed-size buffers without enforcing length limits, leading to multiple instances of buffer overflow.

Impact Analysis

This buffer overflow vulnerability can be exploited remotely (over the network) with high complexity and requires user interaction. Successful exploitation can lead to a complete compromise of confidentiality, integrity, and availability of the affected system, as indicated by the high CVSS score (8.3) with impacts on confidentiality, integrity, and availability.

Compliance Impact

The vulnerability in GeoWebPlayer's websocket server allows for buffer overflow attacks that can lead to arbitrary code execution, impacting confidentiality, integrity, and availability of the system.

Such impacts on confidentiality and integrity could potentially lead to non-compliance with common standards and regulations like GDPR and HIPAA, which require protection of sensitive data and system integrity.

However, the provided information does not explicitly state the direct effects on compliance with these standards.

Mitigation Strategies

An official patch for this vulnerability was released on April 28, 2026. Applying this patch to update GeoWebPlayer to the fixed version is the primary mitigation step.

Since the vulnerability involves a buffer overflow in the Websocket server component, restricting access to the Websocket server, especially limiting connections to localhost or trusted hosts, can reduce exposure.

Monitoring for unusual or malformed JSON commands sent to the Websocket server may help detect exploitation attempts.

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