CVE-2026-57274
Received Received - Intake

GeoWebPlayer WebSocket Buffer Overflow Vulnerability

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 (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-2026-57274
EUVD
EUVD-2026-41236

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-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

CVE-2026-57274 is a stack-based buffer overflow vulnerability in the GeoWebPlayer Websocket Server's connectInfo handler. It specifically affects the password field when no key variable is provided. The vulnerability occurs because the password field in a JSON input can exceed the fixed 64-byte buffer allocated for it, allowing an attacker to overflow the buffer.

This overflow happens due to manual byte-by-byte copying of attacker-controlled JSON strings into fixed-size buffers without enforcing length limits, which can lead to arbitrary code execution.

Compliance Impact

CVE-2026-57274 is a high severity buffer overflow vulnerability that can lead to arbitrary code execution, impacting confidentiality, integrity, and availability of the affected 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 how this vulnerability affects compliance with these standards.

Impact Analysis

This vulnerability has a high severity with a CVSSv3 score of 8.3 and can impact confidentiality, integrity, and availability of the affected system.

  • An attacker can execute arbitrary code on the system running GeoWebPlayer by exploiting the buffer overflow.
  • This can lead to unauthorized access to sensitive information.
  • It may also allow attackers to disrupt the availability of the service or alter data integrity.
Detection Guidance

This vulnerability involves a stack-based buffer overflow in the GeoWebPlayer Websocket Server's connectInfo handler, specifically triggered by a JSON password field exceeding 64 bytes.

Detection can involve monitoring websocket traffic to the GeoWebPlayer server for unusually long password fields in JSON messages sent to the connectInfo handler.

Since the vulnerability is triggered by local commands to the websocket server, network detection might be limited to localhost traffic or logs.

No specific detection commands are provided in the available resources.

Mitigation Strategies

The vendor released a patch for this vulnerability on April 28, 2026.

The immediate mitigation step is to update GeoWebPlayer to the patched version that addresses this buffer overflow issue.

Additionally, restricting access to the GeoWebPlayer websocket server, especially limiting localhost commands or monitoring for suspicious JSON payloads, can help reduce risk.

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