CVE-2026-54403: ubiquiti inc cloud gateways Path Traversal
CVSS: 8.6v3.1HighAnalyzed
Published 02-07-2026Last modified 02-07-2026
Vulnerability summary
CVE-2026-54403 is a high (CVSS 8.6) Path Traversal vulnerability in ubiquiti inc cloud gateways. EPSS estimates a 0.77% chance of exploitation in the next 30 days, higher than 54.9% of scored vulnerabilities.
CVSS score
8.6/10
010
High · v3.1 (CVE.org)EPSS score
0.77%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 02-07-2026PublishedVulnerability first disclosed.
- 02-07-2026Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
2 scores · 2 sources · 1 versionHigh 8.6Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:NSourcesAll 2 agree
- NVDNIST8.6HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
EPSS trend
Probability
0.77%
Chance of exploitation in the next 30 days
Percentile
55%
Versus all other CVEs
30-day change
0.00 pp
From 0.77% on 19-09-2026
19-09-202619-10-2026
EPSS score0.77%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Ui32 products
- enterprise_firewall_core_firmware≤ 5.1.18
- enterprise_fortress_gateway_firmware≤ 5.1.15
- enterprise_network_video_recorder_firmware≤ 5.1.15
- enterprise_network_video_recorder_core_firmware≤ 5.1.15
- unas_2_firmware≤ 5.1.16
Ubiquiti inc12 products
- cloud gateways< 5.1.19
- cloud keys< 5.1.19
- dream machines< 5.1.19
- dream routers< 5.1.19
- dream wall< 5.1.19
2 vendors · 44 products