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TI-2021-04003 Aliases CVE-2021-20777GHSA-q6p4-2q7c-4vw7

Missing authorization in G.U. CO., LTD. GU App for Android

Priority LOW 22CWE-862Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-862.

Summary

Improper authorization in handler for custom URL scheme vulnerability in GU App for Android versions from 4.8.0 to 5.0.2 allows a remote attacker to lead a user to access an arbitrary website via the vulnerable App.

Why it matters now

EPSS 0.00869 58th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
G.U. CO., LTD.GU App for Androidversions from 4.8.0 to 5.0.2—No fix listedCNA
  • GU App for Android VendorG.U. CO., LTD. Affected versions from 4.8.0 to 5.0.2 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:gu-global:gu:*:*:*:*:*:android:*:*4.8.0 – 5.0.2VulnerableGu-global
  • cpe:2.3:a:gu-global:gu:*:*:*:*:*:android:*:* Versions 4.8.0 – 5.0.2 Vulnerable ·Gu-global

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-20777
  2. 2026-10-03 Alias added: GHSA-q6p4-2q7c-4vw7

References

Advisory 1

  • TI-2019-09712 BKS EBK Ethernet-Buskoppler Pro before 3.01 allows Unrestricted Upload of a File with a Dangerous Type. CVSS 3.0CRITICAL 9.8

Sources

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