CVE-2026-57275: GeoVision GeoWebPlayer stack buffer overflow in connectionInfo handler

CVE-2026-57275 · Severity: high · CVSS 8.3 · Published 2026-07-02

GeoWebPlayer is a browser-based plugin used to view video feeds from GeoVision security cameras and management systems. A security flaw allows an attacker to take control of a user's computer if the user visits a malicious website while the plugin is active. This could lead to unauthorized access to camera feeds, data theft, or a total compromise of the workstation.

Technologies: Geovision GeoWebPlayer. Vendors: Geovision.

Quick answers

Is CVE-2026-57275 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-57275 being exploited in the wild.
How severe is CVE-2026-57275?
High severity, with a CVSS score of 8.3, published 2 July 2026.
Which products and versions are affected?
Geovision GeoWebPlayer 1.1.1.0.
Is there a fix for CVE-2026-57275?
A patch was published on 2026-04-28: Vendor patch release Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-57275 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-57275?
Check whether you run Geovision GeoWebPlayer at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A stack-based buffer overflow exists in the GeoWebPlayer (v1.1.1.0) WebSocket server, specifically within the 'handle_connection_info' function. The vulnerability is caused by a manual byte-by-byte copy loop that fails to validate the length of the 'username' JSON field before copying it into a fixed-size 128-byte buffer (when a 'key' is present). An attacker can exploit this by hosting a malicious webpage that sends a specially crafted WebSocket message to the local GeoWebPlayer service. Successful exploitation can lead to arbitrary code execution with the privileges of the plugin. The issue is addressed in version 1.1.3.0.

Affected products

  • GeoVision Inc. GeoWebPlayer (Web Plugin / WS Player) 1.1.1.0

Timeline

  • 2026-03-25: other: Initial vendor contact
  • 2026-04-21: disclosed: Vendor disclosure
  • 2026-04-28: patched: Vendor patch release
  • 2026-07-01: advisory: Public release by Talos

References

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