8.8
HIGH
CVSS 3.1
CVE-2026-54401
UniFi OS SSRF Privilege Escalation
Overview
Description
A malicious actor with access to the network and low privileges could exploit a Server-Side Request Forgery (SSRF) to escalate privileges within such UniFi OS devices or instances.
Details
INFO
Published Date :
July 2, 2026, 3:17 p.m.
Last Modified :
July 10, 2026, 2:50 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Impact
Affected Products
The following products are affected by CVE-2026-54401
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework
for assessing the severity of vulnerabilities in software and systems.
We collect and displays CVSS scores from various sources for each CVE.
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 3.1 | HIGH | [email protected] |
Solution
Remediate SSRF vulnerability by updating UniFi OS and restricting network access.
- Update UniFi OS to the latest version.
- Restrict network access to the affected devices.
- Implement network segmentation.
- Monitor network traffic for suspicious requests.
References
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-54401.
| URL | Resource |
|---|---|
| https://community.ui.com/releases/Security-Advisory-Bulletin-066-066/984eceb3-49c8-4227-942d-671c289b3afc | Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-54401 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-2026-54401
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-54401 vulnerability anywhere in the article.
-
The Cyber Express
Ubiquiti Fixes Critical CVE-2026-50746 and Multiple UniFi OS Vulnerability Flaws
Ubiquiti has released security updates to address several critical security flaws, led by CVE-2026-50746, a maximum-severity UniFi OS vulnerability with a CVSS score of 10.0. Published in Security Adv ... Read more
Published Date:
Jul 10, 2026 (1 week, 6 days ago)
The following table lists the changes that have been made to the
CVE-2026-54401 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jul. 10, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CPE Configuration OR *cpe:2.3:a:ui:unifi_os_server:*:*:*:*:*:*:*:* versions up to (including) 5.1.15 Added CPE Configuration AND OR *cpe:2.3:o:ui:unifi_dream_machine_firmware:*:*:*:*:*:*:*:* versions up to (including) 5.1.15 OR cpe:2.3:h:ui:unifi_dream_machine:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ui:unifi_dream_machine_pro_firmware:*:*:*:*:*:*:*:* versions up to (including) 5.1.15 OR cpe:2.3:h:ui:unifi_dream_machine_pro:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ui:unifi_dream_machine_special_edition_firmware:*:*:*:*:*:*:*:* versions up to (including) 5.1.15 OR cpe:2.3:h:ui:unifi_dream_machine_special_edition:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ui:unifi_dream_machine_pro_max_firmware:*:*:*:*:*:*:*:* versions up to (including) 5.1.15 OR cpe:2.3:h:ui:unifi_dream_machine_pro_max:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ui:unifi_dream_machine_beast_firmware:*:*:*:*:*:*:*:* versions up to (including) 5.1.15 OR cpe:2.3:h:ui:unifi_dream_machine_beast:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ui:enterprise_fortress_gateway_firmware:*:*:*:*:*:*:*:* versions up to (including) 5.1.15 OR cpe:2.3:h:ui:enterprise_fortress_gateway:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ui:unifi_dream_router_firmware:*:*:*:*:*:*:*:* versions up to (including) 5.1.15 OR cpe:2.3:h:ui:unifi_dream_router:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ui:unifi_dream_wall_firmware:*:*:*:*:*:*:*:* versions up to (including) 5.1.15 OR cpe:2.3:h:ui:unifi_dream_wall:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ui:unifi_dream_router_7_firmware:*:*:*:*:*:*:*:* versions up to (including) 5.1.15 OR cpe:2.3:h:ui:unifi_dream_router_7:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ui:unifi_express_7_firmware:*:*:*:*:*:*:*:* versions up to (including) 5.1.15 OR cpe:2.3:h:ui:unifi_express_7:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ui:unifi_cloudkey_firmware:*:*:*:*:*:*:*:* versions up to (including) 5.1.15 OR cpe:2.3:h:ui:unifi_cloudkey:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ui:unifi_cloud_key_plus_firmware:*:*:*:*:*:*:*:* versions up to (including) 5.1.15 OR cpe:2.3:h:ui:unifi_cloud_key_plus:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ui:unifi_cloudkey_enterprise_firmware:*:*:*:*:*:*:*:* versions up to (including) 5.1.15 OR cpe:2.3:h:ui:unifi_cloudkey_enterprise:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ui:unifi_network_video_recorder_firmware:*:*:*:*:*:*:*:* versions up to (including) 5.1.15 OR cpe:2.3:h:ui:unifi_network_video_recorder:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ui:unifi_network_video_recorder_pro_firmware:*:*:*:*:*:*:*:* versions up to (including) 5.1.15 OR cpe:2.3:h:ui:unifi_network_video_recorder_pro:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ui:unifi_network_video_recorder_instant_firmware:*:*:*:*:*:*:*:* versions up to (including) 5.1.15 OR cpe:2.3:h:ui:unifi_network_video_recorder_instant:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ui:enterprise_network_video_recorder_firmware:*:*:*:*:*:*:*:* versions up to (including) 5.1.15 OR cpe:2.3:h:ui:enterprise_network_video_recorder:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ui:enterprise_network_video_recorder_core_firmware:*:*:*:*:*:*:*:* versions up to (including) 5.1.15 OR cpe:2.3:h:ui:enterprise_network_video_recorder_core:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ui:unifi_network_video_recorder_g2_firmware:*:*:*:*:*:*:*:* versions up to (including) 5.1.15 OR cpe:2.3:h:ui:unifi_network_video_recorder_g2:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ui:unifi_network_video_recorder_g2_pro_firmware:*:*:*:*:*:*:*:* versions up to (including) 5.1.15 OR cpe:2.3:h:ui:unifi_network_video_recorder_g2_pro:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ui:unifi_cloud_gateway_ultra_firmware:*:*:*:*:*:*:*:* versions up to (including) 5.1.15 OR cpe:2.3:h:ui:unifi_cloud_gateway_ultra:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ui:unifi_cloud_gateway_max_firmware:*:*:*:*:*:*:*:* versions up to (including) 5.1.15 OR cpe:2.3:h:ui:unifi_cloud_gateway_max:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ui:unifi_cloud_gateway_industrial_firmware:*:*:*:*:*:*:*:* versions up to (including) 5.1.15 OR cpe:2.3:h:ui:unifi_cloud_gateway_industrial:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ui:unifi_cloud_gateway_fiber_firmware:*:*:*:*:*:*:*:* versions up to (including) 5.1.15 OR cpe:2.3:h:ui:unifi_cloud_gateway_fiber:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ui:unas_2_firmware:*:*:*:*:*:*:*:* versions up to (including) 5.1.16 OR cpe:2.3:h:ui:unas_2:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ui:unas_4_firmware:*:*:*:*:*:*:*:* versions up to (including) 5.1.16 OR cpe:2.3:h:ui:unas_4:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ui:unas_pro_firmware:*:*:*:*:*:*:*:* versions up to (including) 5.1.16 OR cpe:2.3:h:ui:unas_pro:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ui:unas_pro_4_firmware:*:*:*:*:*:*:*:* versions up to (including) 5.1.16 OR cpe:2.3:h:ui:unas_pro_4:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ui:unas_pro_8_firmware:*:*:*:*:*:*:*:* versions up to (including) 5.1.16 OR cpe:2.3:h:ui:unas_pro_8:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ui:enterprise_firewall_core_firmware:*:*:*:*:*:*:*:* versions up to (including) 5.1.18 OR cpe:2.3:h:ui:enterprise_firewall_core:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ui:unifi_dream_router_5g_max_firmware:*:*:*:*:*:*:*:* versions up to (including) 5.1.15 OR cpe:2.3:h:ui:unifi_dream_router_5g_max:-:*:*:*:*:*:*:* Added Reference Type HackerOne: https://community.ui.com/releases/Security-Advisory-Bulletin-066-066/984eceb3-49c8-4227-942d-671c289b3afc Types: Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jul. 02, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-54401', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-07-02T15:48:48.891370Z'} -
New CVE Received by [email protected]
Jul. 02, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Ubiquiti Inc', 'product': 'UniFi OS Server', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '5.1.19', 'versionType': 'semver'}], 'defaultStatus': 'unaffected'}, {'vendor': 'Ubiquiti Inc', 'product': 'Dream Machines', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '5.1.19', 'versionType': 'semver'}], 'defaultStatus': 'unaffected'}, {'vendor': 'Ubiquiti Inc', 'product': 'Enterprise Fortress Gateway', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '5.1.19', 'versionType': 'semver'}], 'defaultStatus': 'unaffected'}, {'vendor': 'Ubiquiti Inc', 'product': 'Dream Wall', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '5.1.19', 'versionType': 'semver'}], 'defaultStatus': 'unaffected'}, {'vendor': 'Ubiquiti Inc', 'product': 'Dream Routers', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '5.1.19', 'versionType': 'semver'}], 'defaultStatus': 'unaffected'}, {'vendor': 'Ubiquiti Inc', 'product': 'Express 7', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '5.1.19', 'versionType': 'semver'}], 'defaultStatus': 'unaffected'}, {'vendor': 'Ubiquiti Inc', 'product': 'Cloud Keys', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '5.1.19', 'versionType': 'semver'}], 'defaultStatus': 'unaffected'}, {'vendor': 'Ubiquiti Inc', 'product': 'Network Video Recorders', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '5.1.19', 'versionType': 'semver'}], 'defaultStatus': 'unaffected'}, {'vendor': 'Ubiquiti Inc', 'product': 'Enterprise Video Recorders', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '5.1.19', 'versionType': 'semver'}], 'defaultStatus': 'unaffected'}, {'vendor': 'Ubiquiti Inc', 'product': 'Cloud Gateways', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '5.1.19', 'versionType': 'semver'}], 'defaultStatus': 'unaffected'}, {'vendor': 'Ubiquiti Inc', 'product': 'Network Attached Storage', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '5.1.19', 'versionType': 'semver'}], 'defaultStatus': 'unaffected'}, {'vendor': 'Ubiquiti Inc', 'product': 'Enterprise Firewall Core', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '5.1.19', 'versionType': 'semver'}], 'defaultStatus': 'unaffected'}] Added Description A malicious actor with access to the network and low privileges could exploit a Server-Side Request Forgery (SSRF) to escalate privileges within such UniFi OS devices or instances. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N Added CWE CWE-918 Added Reference https://community.ui.com/releases/Security-Advisory-Bulletin-066-066/984eceb3-49c8-4227-942d-671c289b3afc
EPSS is a daily estimate of the probability of exploitation activity
being observed over the next 30 days. Following chart shows the EPSS
score history of the vulnerability.