Path traversal in UI Unifi OS Server
CVSS score
8.6
EPSS probability
%0.8
Risk score
0.1
Published
3 mo ago
Resmî kaynaklarda yeterli kanıt bulunamadı. Bu sonuç “yama yok” anlamına gelmez.
Impact on My Inventory
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Vulnerability description
DayBreach CVE AI Research
CVE-2026-54403 has vendor, distribution, patch and security-source records on file. We can compare them and prepare an explanation linked to the evidence.
A malicious actor with access to the network could exploit a Path Traversal vulnerability found in certain devices running UniFi OS to bypass authentication of such UniFi OS devices or instances.
IMPACT: Affected Products and Software
Affected Products
The following products are affected by CVE-2026-54403 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.
| ID | VENDOR | PRODUCT | ACTION |
|---|---|---|---|
| 1 | ui | unifi os server | View |
| 2 | ui | unifi dream machine firmware | View |
| 3 | ui | unifi dream machine | View |
| 4 | ui | unifi dream machine pro firmware | View |
| 5 | ui | unifi dream machine pro | View |
| 6 | ui | unifi dream machine special edition firmware | View |
| 7 | ui | unifi dream machine special edition | View |
| 8 | ui | unifi dream machine pro max firmware | View |
| 9 | ui | unifi dream machine pro max | View |
| 10 | ui | unifi dream machine beast firmware | View |
| 11 | ui | unifi dream machine beast | View |
| 12 | ui | enterprise fortress gateway firmware | View |
| 13 | ui | enterprise fortress gateway | View |
| 14 | ui | unifi dream router firmware | View |
| 15 | ui | unifi dream router | View |
| 16 | ui | unifi dream wall firmware | View |
| 17 | ui | unifi dream wall | View |
| 18 | ui | unifi dream router 7 firmware | View |
| 19 | ui | unifi dream router 7 | View |
| 20 | ui | unifi express 7 firmware | View |
| 21 | ui | unifi express 7 | View |
| 22 | ui | unifi cloudkey firmware | View |
| 23 | ui | unifi cloudkey | View |
| 24 | ui | unifi cloud key plus firmware | View |
| 25 | ui | unifi cloud key plus | View |
| 26 | ui | unifi cloudkey enterprise firmware | View |
| 27 | ui | unifi cloudkey enterprise | View |
| 28 | ui | unifi network video recorder firmware | View |
| 29 | ui | unifi network video recorder | View |
| 30 | ui | unifi network video recorder pro firmware | View |
| 31 | ui | unifi network video recorder pro | View |
| 32 | ui | unifi network video recorder instant firmware | View |
| 33 | ui | unifi network video recorder instant | View |
| 34 | ui | enterprise network video recorder firmware | View |
| 35 | ui | enterprise network video recorder | View |
| 36 | ui | enterprise network video recorder core firmware | View |
| 37 | ui | enterprise network video recorder core | View |
| 38 | ui | unifi network video recorder g2 firmware | View |
| 39 | ui | unifi network video recorder g2 | View |
| 40 | ui | unifi network video recorder g2 pro firmware | View |
| 41 | ui | unifi network video recorder g2 pro | View |
| 42 | ui | unifi cloud gateway ultra firmware | View |
| 43 | ui | unifi cloud gateway ultra | View |
| 44 | ui | unifi cloud gateway max firmware | View |
| 45 | ui | unifi cloud gateway max | View |
| 46 | ui | unifi cloud gateway industrial firmware | View |
| 47 | ui | unifi cloud gateway industrial | View |
| 48 | ui | unifi cloud gateway fiber firmware | View |
| 49 | ui | unifi cloud gateway fiber | View |
| 50 | ui | unas 2 firmware | View |
| 51 | ui | unas 2 | View |
| 52 | ui | unas 4 firmware | View |
| 53 | ui | unas 4 | View |
| 54 | ui | unas pro firmware | View |
| 55 | ui | unas pro | View |
| 56 | ui | unas pro 4 firmware | View |
| 57 | ui | unas pro 4 | View |
| 58 | ui | unas pro 8 firmware | View |
| 59 | ui | unas pro 8 | View |
| 60 | ui | enterprise firewall core firmware | View |
| 61 | ui | enterprise firewall core | View |
| 62 | ui | unifi dream router 5g max firmware | View |
| 63 | ui | unifi dream router 5g max | View |
RED HAT CSAF/VEX: Product Impact Check
SCORING: CVSS from Multiple Sources
CVSS Scores
The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.
| SCORE | VERSION | SEVERITY | VECTOR | SOURCE |
|---|---|---|---|---|
| 8.6 | CVSS V31 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N | NVD |
Patch and Remediation Guide
Solution & Remediation Advisory
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Public exploit and active exploitation status
Verified exploit intelligence
No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.
Weakness Classification and Attack Patterns (CWE & CAPEC)
CWE - Common Weakness Enumeration
While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-54403 is associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-54403 weaknesses.
Attack Vector and Accessibility
Official Sources and Advisories
Similar Vulnerabilities
Get this vulnerability through the API
Affected products, version ranges, exploitation status and patch information in a single request, with a free key.
curl -H "x-api-key: $DAYBREACH_API_KEY" \ "https://api.daybreach.dev/api/v1/intel/cves/CVE-2026-54403"