---
id: CVE-2026-82988
title: >-
  There exists an arbitrary file download in vCast APK delivery mechanism in
  ViewSonic ViewBoard unknown allows a remote, unauthenticated attacker to
  trigger unprivileged APK installation via serving a malicious APK URL through
  an unauthen…
summary: >-
  There exists an arbitrary file download in vCast APK delivery mechanism in
  ViewSonic ViewBoard unknown allows a remote, unauthenticated attacker to
  trigger unprivileged APK installation via serving a malicious APK URL through
  an unauthen…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-287
  - CWE-434
  - CWE-502
vendor: Viewsonic
product: vCast
affected:
  - vCast >= v0.0.0 <= v3.2.715
published: '2026-10-06'
updated: '2026-10-06'
sourceUpdated: '2026-10-06T15:03:59.427'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-82988'
references:
  - url: 'https://blog.l3afs.space/posts/Vcast-Viewsonic-RCE-chain/'
    label: cret@cert.org
  - url: 'https://kb.cert.org/vuls/id/234131'
    label: cret@cert.org
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-10-06T13:12:32.814466Z'
ingestedAt: '2026-10-05T23:36:21.185Z'
epss: 0.00465
epssPercentile: 0.40063
---

## Overview

There exists an arbitrary file download in vCast APK delivery mechanism in ViewSonic ViewBoard unknown allows a remote, unauthenticated attacker to trigger unprivileged APK installation via serving a malicious APK URL through an unauthenticated download endpoint

## Remediation

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