CVE-2026-57266
Received Received - Intake

GeoWebPlayer WebSocket Index Out-of-Bounds Access

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. Many of the commands will take an `index` value that is then used to access various arrays to enter critical sections, perform various actions via function calls, etc. However the `index` value is usually not checked for valid range, and as such it can be used to access multiple arrays out-of-bound. #### 2wayAudio command index-out-of-bound

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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-2026-57266
EUVD
EUVD-2026-41228

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
geovision geowebplayer 1.1.1.0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-129 The product uses untrusted input when calculating or using an array index, but the product does not validate or incorrectly validates the index to ensure the index references a valid position within the array.

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Compliance Impact

The provided information does not explicitly address how CVE-2026-57266 impacts compliance with common standards and regulations such as GDPR or HIPAA.

Executive Summary

CVE-2026-57266 is an out-of-bounds read and write vulnerability in the GeoWebPlayer Websocket Server, specifically in the 2wayAudio command. The vulnerability arises because the server accepts an index value from websocket messages without properly checking if it is within valid bounds. This allows an attacker to send a specially crafted message with a malicious index that accesses arrays out-of-bound, potentially leading to arbitrary code execution on the affected system.

Impact Analysis

This vulnerability can have severe impacts as it allows an attacker to execute arbitrary code on the affected system remotely. Exploiting this flaw could lead to full compromise of the system running GeoWebPlayer, including unauthorized access, data manipulation, or disruption of services. The vulnerability has a high severity score (CVSS 8.3), indicating significant risk to confidentiality, integrity, and availability.

Detection Guidance

This vulnerability involves the GeoWebPlayer Websocket Server accepting specially crafted websocket messages with malicious index values in the 2wayAudio command. Detection can focus on monitoring websocket traffic for unusual or malformed 2wayAudio command messages containing out-of-bound index values.

Since the vulnerability is triggered by websocket messages from localhost, network detection might be limited to local traffic inspection or application-level logging.

Specific commands to detect this vulnerability are not provided in the available resources.

Mitigation Strategies

The vendor released a patch addressing this vulnerability on April 28, 2026. The immediate mitigation step is to update the GeoWebPlayer software to the patched version (at least version 1.1.1.0 or later) provided by GeoVision.

Additionally, restricting access to the websocket server to trusted localhost processes and monitoring for suspicious websocket messages can help reduce risk until the patch is applied.

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