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TI-2026-78990 Aliases CVE-2026-82987GHSA-r9hh-v5mm-mfgr

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Priority MEDIUM 40CWE-306Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · None · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-306.

Summary

ViewSonic vCast media streaming service in ViewSonic ViewBoard, versions from v0.0.0 through v3.2.715, has a screen capture endpoint without authentication. A remote, unauthenticated attacker can retrieve the current screen content as JPEG images from the unauthenticated /snapshot or /screen endpoint, due to missing authentication for critical functionality (CWE-306).

Written with Claude Haiku 5.5 from the sources below · 2026-11-05

Description from the CNA

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

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00584 48th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ViewsonicvCastv0.0.0 – v3.2.715—No fix listedCNA
  • vCast VendorViewsonic Affected v0.0.0 – v3.2.715 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for vCast.

Written with Claude Haiku 5.5 from the sources below · 2026-11-05

Timeline

  1. 2026-10-21 Threatist record created from CVE-2026-82987
  2. 2026-10-21 Alias added: GHSA-r9hh-v5mm-mfgr
  3. 2026-10-30 CVSS score added · CISA ADP
  4. 2026-10-30 Weakness changed · CISA ADP
  5. 2026-10-30 CISA SSVC decision points changed
  6. 2026-11-01 Priority changed: LOW → MEDIUM

References

Other 2

  • TI-2026-68031 Input injection in ViewSonic ViewBoard vCast network services CVSS 3.1CRITICAL 9.8
  • TI-2026-68030 Arbitrary file download in ViewSonic vCast APK delivery CVSS 3.1HIGH 7.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences