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TI-2026-17426 Aliases CVE-2026-21634GHSA-w6v6-cxgj-7xh5

Memory corruption in Ubiquiti UniFi Protect Application

Priority LOW 29CWE-119Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.

Summary

A malicious actor with access to the adjacent network could overflow the UniFi Protect Application (Version 6.1.79 and earlier) discovery protocol causing it to restart. Affected Products: UniFi Protect Application (Version 6.1.79 and earlier). Mitigation: Update your UniFi Protect Application to Version 6.2.72 or later.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00431 37th percentileScored 2026-11-07
Fix Fixed UniFi Protect Application (Ubiquiti Inc): 6.2.72

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
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
UbiquitiUniFi Protect Application6.1.79 to before 6.2.726.2.72Patch availableCNA
  • UniFi Protect Application VendorUbiquiti Affected 6.1.79 to before 6.2.72 Fixed in 6.2.72 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:ui:unifi_protect:*:*:*:*:*:*:*:*before 6.2.72VulnerableUbiquiti
  • cpe:2.3:a:ui:unifi_protect:*:*:*:*:*:*:*:* Versions before 6.2.72 Vulnerable ·Ubiquiti

Remediation

  • Fix · CNA UniFi Protect Application (Ubiquiti Inc) Fixed in 6.2.72

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Ubiquiti UniFi Protect Application 6.2.72

    2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2026-17425 Improper authentication in Ubiquiti UniFi Protect ApplicationPriority MEDIUM 40
    Show all 2 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-21634
  2. 2026-10-03 Alias added: GHSA-w6v6-cxgj-7xh5

References

Advisory 1

  • TI-2026-39284 Improper access control in Ubiquiti UniFi Protect Application CVSS 3.1CRITICAL 9.8
  • TI-2026-39283 Improper access control in Ubiquiti UniFi Protect Application CVSS 3.1HIGH 8.6
  • TI-2026-39813 Server-side request forgery in Ubiquiti UniFi Protect Application CVSS 3.1CRITICAL 9.9
  • TI-2026-40983 SQL injection in Ubiquiti UniFi Protect Application CVSS 3.1HIGH 8.8
  • TI-2021-05804 Improper authentication in UniFi Protect application CVSS 3.1CRITICAL 9.6
  • TI-2026-17425 Improper authentication in Ubiquiti UniFi Protect Application CVSS 3.1HIGH 8.8
See all 10 →

Sources

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