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CVE-2026-54405

HIGH
7.5
CVSS Score
Published: July 2, 2026 at 02:49 PM UTC
Updated: October 25, 2026 at 09:10 PM UTC
2 products affected across 2 vendorsUnifi Network ApplicationUniFi Network Application

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Severity
HIGH7.5
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

Description

A malicious actor with access to the network could exploit an Improper Input Validation vulnerability found in UniFi Network Application to execute a Denial of Service (DoS) attack on the application.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Unifi Network Application· UI
95%
v < 10.4.57
Affected range stops below 10.4.57, so it looks safe — our inference, not a vendor statement
UniFi Network Application· Ubiquiti
90%
v < 10.4.57
Affected range stops below 10.4.57, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Vendor Advisory
Source: [email protected]
https://community.ui.com/releases/Security-Advisory-Bulletin-066-066/984eceb3-49c8-4227-942d-671c289b3afc

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHhackerone
Vector?

Quick Info

StatusANALYZED
CWE
CWE-20

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