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TI-2021-13173 Aliases CVE-2021-33820GHSA-8vw7-3cp3-ph8j

An issue was discovered in UniFi Protect G3 FLEX Camera Version UVC.v4.30.0.67.Attacker…

Priority LOW 37Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

An issue was discovered in UniFi Protect G3 FLEX Camera Version UVC.v4.30.0.67.Attacker could send a huge amount of TCP SYN packet to make web service's resource exhausted. Then the web server is denial-of-service.

Why it matters now

EPSS 0.01934 80th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
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
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:ui:camera_g3_flex_firmware:uvc.v4.30.0.67:*:*:*:*:*:*:*uvc.v4.30.0.67VulnerableUbiquiti
cpe:2.3:h:ui:camera_g3_flex:-:*:*:*:*:*:*:*not specified by NVDRunning onUbiquiti
  • cpe:2.3:o:ui:camera_g3_flex_firmware:uvc.v4.30.0.67:*:*:*:*:*:*:* Versions uvc.v4.30.0.67 Vulnerable ·Ubiquiti
  • cpe:2.3:h:ui:camera_g3_flex:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Ubiquiti

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-33820
  2. 2026-10-03 Alias added: GHSA-8vw7-3cp3-ph8j

References

Exploit 1

Advisory 2

  • TI-2021-13172 An issue was discovered in UniFi Protect G3 FLEX Camera Version UVC.v4.30.0.67. CVSS 3.1HIGH 7.5

Sources

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