ViewSonic vCast up to 3.2.715 APK Delivery Mechanism improper authentication

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.3$0-$5k1.27

Summaryinfo

A vulnerability identified as critical has been detected in ViewSonic vCast up to 3.2.715. Affected is an unknown function of the component APK Delivery Mechanism. This manipulation causes improper authentication. This vulnerability appears as CVE-2026-82988. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability was found in ViewSonic vCast up to 3.2.715. It has been declared as critical. Affected by this vulnerability is some unknown functionality of the component APK Delivery Mechanism. The manipulation with an unknown input leads to a improper authentication vulnerability. The CWE definition for the vulnerability is CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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

It is possible to read the advisory at blog.l3afs.space. This vulnerability is known as CVE-2026-82988 since 08/31/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/06/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.3

VulDB Base Score: 7.3
VulDB Temp Score: 7.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Improper authentication
CWE: CWE-287
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

08/31/2026 CVE reserved
10/05/2026 +35 days VulDB entry created
10/06/2026 +0 days Advisory disclosed
10/06/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: blog.l3afs.space
Status: Not defined

CVE: CVE-2026-82988 (🔒)
GCVE (CVE): GCVE-0-2026-82988
GCVE (VulDB): GCVE-100-413863

Entryinfo

Created: 10/06/2026 01:44
Changes: 10/06/2026 01:44 (52)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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