CVE-2026-57273
Received Received - Intake

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 username field (no 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-2026-57273
EUVD
EUVD-2026-41235

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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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.

Executive Summary

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

The buffer overflow vulnerability in the 'handle_connection_info' function can be exploited to cause serious impacts including complete compromise of confidentiality, integrity, and availability of the affected system. The CVSS score of 8.3 indicates a high severity, meaning an attacker could potentially execute arbitrary code, cause denial of service, or gain unauthorized access by exploiting this flaw.

Mitigation Strategies

To mitigate this vulnerability, you should apply the patch released by the vendor on April 28, 2026, which addresses the buffer overflow issues in GeoWebPlayer version 1.1.1.0.

Additionally, consider restricting access to the GeoWebPlayer websocket server to trusted hosts only, as the vulnerable commands are accepted from localhost.

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