EUVD-2026-41238
GHSA-m39x-xw5g-mc76
Severity by source
AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
Remote page drives the localhost WebSocket (AV:N) with no auth (PR:N) but needs victim browsing (UI:R) and reliable overflow (AC:H); payload crosses into a separate process (S:C) yielding full RCE.
Primary rating from Vendor (GV).
CVSS VectorVendor: GV
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
Lifecycle Timeline
1DescriptionCVE.org
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 callhandle_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 (key present)
AnalysisAI
Remote code execution in GeoVision GeoWebPlayer (the browser-facing 'Web Plugin'/'WS Player' addon bundled with GV-VMS, GV-Cloud and related products) is possible because the local WebSocket server's connectionInfo handler copies attacker-controlled JSON fields into fixed-size buffers with unchecked byte-by-byte loops. A remote attacker who lures a user to a malicious web page can drive the victim's browser to send an oversized password field to the localhost WebSocket, overflowing the buffer and achieving code execution (CVSS 8.3). …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the GeoWebPlayer/Web Plugin/WS Player addon to be installed and running its localhost WebSocket server, and a victim user must open attacker-controlled web content in a browser on that same host so the browser initiates the WebSocket connection (UI:R). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The supplied CVSS 3.1 vector (AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H, base 8.3) rates this high: network reachable, no privileges, but high complexity and required user interaction, with a scope change reflecting that the browser-delivered payload crosses into a separate local process. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker hosts a malicious web page and lures a GeoVision operator whose workstation runs GeoWebPlayer to visit it; the page's JavaScript opens a WebSocket to the localhost server and sends a connectionInfo message with an over-long password field. The unchecked copy loop overflows a fixed-size buffer, and with a reliable exploit (reflected in the AC:H rating) the attacker gains code execution in the addon's process. … |
| Remediation | No exact vendor-released fix version was identified in the available data; consult the GeoVision cyber security advisory at https://www.geovision.com.tw/cyber_security.php and Talos report TALOS-2026-2375 (https://talosintelligence.com/vulnerability_reports/TALOS-2026-2375) for a patched build and apply it once published. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Inventory all systems running GeoVision GV-VMS or GV-Cloud and assess user web browsing exposure. …
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External POC / Exploit Code
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