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CVE-2026-54402

⛔ critical
🔍 Scan for this CVE
Summary

A malicious actor with access to the network and low privileges could exploit an Improper Input Validation vulnerability found in UniFi OS to execute a Command Injection on the host device.

CVSS Score
9.9
Critical
EPSS Score
0.9
Exploit Probability
Published Date
2026-07-02
First Seen: 2026-07-03
📊 Relative Risk Intelligence

This CVE is Extremely High Risk - more severe than 98.1% of all 338,292 vulnerabilities in our database.

#6,317
Top 5% most severe
Severity Percentile
🎯 CISA SSVC Assessment Updated: Jul 2, 2026
🔍 Exploitation Status
None
No known exploits
⚙️ Automatable
NO
Requires human interaction
💥 Technical Impact
Total
Complete system compromise possible
SSVC data provided by CISA
Last Modified 2026-07-10
Source NVD 🔗
CVSS Vector 3.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CWE IDs (Weakness Types)
CWE-20 CWE-77

📦 Affected Products 32

Vendor Product Status Affected Versions
ui unifi_dream_machine_firmware Affected
< 5.1.15
ui unifi_dream_machine_pro_firmware Affected
< 5.1.15
ui unifi_os_server Affected
< 5.1.15
ui enterprise_firewall_core_firmware Affected
< 5.1.18
ui enterprise_fortress_gateway_firmware Affected
< 5.1.15
ui enterprise_network_video_recorder_core_firmware Affected
< 5.1.15
ui enterprise_network_video_recorder_firmware Affected
< 5.1.15
ui unas_2_firmware Affected
< 5.1.16
ui unas_4_firmware Affected
< 5.1.16
ui unas_pro_4_firmware Affected
< 5.1.16
ui unas_pro_8_firmware Affected
< 5.1.16
ui unas_pro_firmware Affected
< 5.1.16
ui unifi_cloud_gateway_fiber_firmware Affected
< 5.1.15
ui unifi_cloud_gateway_industrial_firmware Affected
< 5.1.15
ui unifi_cloud_gateway_max_firmware Affected
< 5.1.15
ui unifi_cloud_gateway_ultra_firmware Affected
< 5.1.15
ui unifi_cloud_key_plus_firmware Affected
< 5.1.15
ui unifi_cloudkey_enterprise_firmware Affected
< 5.1.15
ui unifi_cloudkey_firmware Affected
< 5.1.15
ui unifi_dream_machine_beast_firmware Affected
< 5.1.15
ui unifi_dream_machine_pro_max_firmware Affected
< 5.1.15
ui unifi_dream_machine_special_edition_firmware Affected
< 5.1.15
ui unifi_dream_router_7_firmware Affected
< 5.1.15
ui unifi_dream_router_firmware Affected
< 5.1.15
ui unifi_dream_wall_firmware Affected
< 5.1.15
ui unifi_express_7_firmware Affected
< 5.1.15
ui unifi_network_video_recorder_firmware Affected
< 5.1.15
ui unifi_network_video_recorder_g2_firmware Affected
< 5.1.15
ui unifi_network_video_recorder_g2_pro_firmware Affected
< 5.1.15
ui unifi_network_video_recorder_instant_firmware Affected
< 5.1.15
ui unifi_network_video_recorder_pro_firmware Affected
< 5.1.15
ui unifi_dream_router_5g_max_firmware Affected
< 5.1.15

🔗 References 1

https://community.ui.com/releases/Security-Advisory-...
Vendor Advisory

🔗 Related CVEs 6

CVE ID Severity CVSS EPSS Summary Published
CVE-2026-54401 ⚠️ high 7.7 0.2 A malicious actor with access to the network and low privileges could exploit a Server-Side Request Forgery (SSRF) to es... 2026-07-02
CVE-2026-54403 ⚠️ high 8.6 0.5 A malicious actor with access to the network could exploit a Path Traversal vulnerability found in certain devices runni... 2026-07-02
CVE-2026-54404 ⚠️ high 8.8 0.3 A malicious actor with access to the network and low privileges could exploit a series of authenticated SQL Injection vu... 2026-07-02
CVE-2026-55110 ⚠️ high 7.5 0.1 A malicious actor who lures an authenticated user to a malicious page could exploit a Cross-Origin Resource Sharing (COR... 2026-07-02
CVE-2026-55112 ⚠️ high 7.5 0.2 A malicious actor with access to the network and low privileges and under certain conditions could exploit an Improper A... 2026-07-02
CVE-2026-34908 ⛔ critical 10.0 58.4 A malicious actor with access to the network could exploit an Improper Access Control vulnerability found in UniFi OS de... 2026-05-22
These CVEs affect the same products