---
id: CVE-2026-82987
title: CVE-2026-82987
summary: >-
  There exists a screen capture endpoint in vCast media streaming service in
  ViewSonic ViewBoard unknown allows a remote, unauthenticated attacker to
  capture and exfiltrate the current screen content via GET requests to an
  unauthenticated …
severity: none
cwe:
  - CWE-306
vendor: Viewsonic
product: vCast
affected:
  - vCast >= v0.0.0 <= v3.2.715
published: '2026-10-21'
updated: '2026-10-21'
sourceUpdated: '2026-10-21T20:48:10.861Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-82987'
references:
  - url: 'https://blog.l3afs.space/posts/Vcast-Viewsonic-RCE-chain/'
  - url: 'https://kb.cert.org/vuls/id/234131'
tags:
  - cve.org
ingestedAt: '2026-10-21T21:13:32.883Z'
---

## Overview

There exists a screen capture endpoint in vCast media streaming service in ViewSonic ViewBoard unknown allows a remote, unauthenticated attacker to capture and exfiltrate the current screen content via GET requests to an unauthenticated /snapshot or /screen endpoint returning JPEGs

## Affected

- `vCast >= v0.0.0 <= v3.2.715`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.