How many Ubiquiti UniFi OS Server CVEs are in CISA KEV?

Yes — 3 of Ubiquiti UniFi OS Server's CVEs are listed in CISA's Known Exploited Vulnerabilities catalog, confirmed exploited in the wild and carrying a CISA remediation deadline.

Which versions of Ubiquiti UniFi OS Server are affected?

6 distinct Ubiquiti UniFi OS Server versions are named across its CVEs. Use the version filter above to see the CVEs affecting a specific version.

What are the most common weakness types in Ubiquiti UniFi OS Server CVEs?

Ubiquiti UniFi OS Server's CVEs most often map to these CWE weakness types: CWE-20 (Improper Input Validation), CWE-22 (Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')), CWE-284 (Improper Access Control), CWE-89 (Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')).

How many critical Ubiquiti UniFi OS Server vulnerabilities are there?

Ubiquiti UniFi OS Server has 7 critical and 6 high-severity CVEs.

What is the average severity of Ubiquiti UniFi OS Server CVEs?

The average CVSS base score across Ubiquiti UniFi OS Server's scored CVEs is 9.1.

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Ubiquiti

13 CVEs

3 in CISA KEV

Ubiquiti UniFi OS Server Vulnerabilities

Name: Ubiquiti UniFi OS Server vulnerability dataset (CVEs)
Creator: RadicalNotion.AI
License: https://creativecommons.org/licenses/by-nc/4.0/

CVE security advisories and vulnerability history for UniFi OS Server by Ubiquiti.

13

Total CVEs

Published

3

In CISA KEV

Exploited in the wild

3

Public exploits

PoC or exploit code

9.1

Avg CVSS

2026–2026

Last updated July 2, 2026

Overview

Ubiquiti UniFi OS Server has 13 published CVE records since 2026, of which 3 are in CISA's Known Exploited Vulnerabilities catalog and 3 have a known public exploit. The average CVSS base score across scored CVEs is 9.1.

This page aggregates every publicly disclosed vulnerability (CVE) affecting Ubiquiti UniFi OS Server, with a severity breakdown, the affected and patched versions, the most common weakness types, and the full CVE list.

Severity and exploitation

How the CVSS severity of Ubiquiti UniFi OS Server's CVEs breaks down, plus how many are exploited in the wild or have public exploit code.

Critical7

High6

Medium0

Low0

In CISA’s Known Exploited Vulnerabilities catalog

3

3 of Ubiquiti UniFi OS Server's CVEs are confirmed exploited in the wild.

Public exploits

3

3 of Ubiquiti UniFi OS Server's CVEs have a known public exploit available.

Affected versions and CVEs

Browse every Ubiquiti UniFi OS Server version named in a CVE, then pick one to see only the CVEs that affect it.

Version ranges

< 5.0.85 CVEs
< 5.1.195 CVEs
< 5.1.153 CVEs

Fixed in

5.0.85 CVEs
5.1.195 CVEs
5.1.153 CVEs

Find a version

13 CVEs

Sort

High vulnerability · 2026-07-02
CVE-2026-54401
Patch
CWE-918
High · CVSS 8.8
EPSS 0.2% (12th pct)2026-07-02
Critical vulnerability · 2026-07-02
CVE-2026-54402
Patch
CWE-20
Critical · CVSS 9.9
EPSS 1.2% (65th pct)2026-07-02
High vulnerability · 2026-07-02
CVE-2026-55110
Patch
CWE-942
High · CVSS 7.5
EPSS 0.1% (4th pct)2026-07-02
High vulnerability · 2026-07-02
CVE-2026-54404
Patch
CWE-89
High · CVSS 8.8
EPSS 0.3% (20th pct)2026-07-02
High vulnerability · 2026-07-02
CVE-2026-54403
Patch
CWE-22
High · CVSS 8.6
EPSS 0.6% (43th pct)2026-07-02
Critical vulnerability · 2026-06-12
CVE-2026-47370
Patch
CWE-20
Critical · CVSS 9.9
EPSS 0.8% (54th pct)2026-06-12
Critical vulnerability · 2026-06-12
CVE-2026-47369
Patch
CWE-20
Critical · CVSS 9.9
EPSS 0.3% (23th pct)2026-06-12
High vulnerability · 2026-06-12
CVE-2026-47368
Patch
CWE-22
High · CVSS 8.6
EPSS 0.4% (28th pct)2026-06-12
High vulnerability · 2026-05-22
CVE-2026-34911
Patch
CWE-22
High · CVSS 7.7
EPSS 0.7% (49th pct)2026-05-22
Critical vulnerability · 2026-05-22
CVE-2026-33000
Patch
CWE-20
Critical · CVSS 9.1
EPSS 1.2% (66th pct)2026-05-22
Critical vulnerability · 2026-05-22
CVE-2026-34910
CISA KEV
Public exploit
Patch
CWE-20
Added to CISA KEV 2026-06-23
Critical · CVSS 10.0
EPSS 87.0% (100th pct)2026-05-22
Critical vulnerability · 2026-05-22
CVE-2026-34908
CISA KEV
Public exploit
Patch
CWE-284
Added to CISA KEV 2026-06-23
Critical · CVSS 10.0
EPSS 58.4% (99th pct)2026-05-22
Critical vulnerability · 2026-05-22
CVE-2026-34909
CISA KEV
Public exploit
Patch
CWE-22
Added to CISA KEV 2026-06-23
Critical · CVSS 10.0
EPSS 56.9% (99th pct)2026-05-22

Common weakness types

The CWE weakness categories most often found in Ubiquiti UniFi OS Server CVEs. Follow any weakness for its full explanation.

Other Ubiquiti products

Browse vulnerabilities for other products by Ubiquiti.

EdgeRouter X14 CVEs Express 714 CVEs UniFi Network Application14 CVEs EFG9 CVEs UCG-Max9 CVEs UDM9 CVEs UDM-Pro9 CVEs UDM-Pro-Max9 CVEs

All Ubiquiti vulnerabilities

Frequently asked questions

Common questions about Ubiquiti UniFi OS Server vulnerabilities.

How many CVEs does Ubiquiti UniFi OS Server have?: Ubiquiti UniFi OS Server has 13 published CVE records since 2026.
How many Ubiquiti UniFi OS Server CVEs are in CISA KEV?: Yes — 3 of Ubiquiti UniFi OS Server's CVEs are listed in CISA's Known Exploited Vulnerabilities catalog, confirmed exploited in the wild and carrying a CISA remediation deadline.
Are there public exploits for Ubiquiti UniFi OS Server vulnerabilities?: Yes — 3 of Ubiquiti UniFi OS Server's CVEs have a known public exploit.
Which versions of Ubiquiti UniFi OS Server are affected?: 6 distinct Ubiquiti UniFi OS Server versions are named across its CVEs. Use the version filter above to see the CVEs affecting a specific version.
What are the most common weakness types in Ubiquiti UniFi OS Server CVEs?: Ubiquiti UniFi OS Server's CVEs most often map to these CWE weakness types: CWE-20 (Improper Input Validation), CWE-22 (Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')), CWE-284 (Improper Access Control), CWE-89 (Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')).
How many critical Ubiquiti UniFi OS Server vulnerabilities are there?: Ubiquiti UniFi OS Server has 7 critical and 6 high-severity CVEs.
What is the average severity of Ubiquiti UniFi OS Server CVEs?: The average CVSS base score across Ubiquiti UniFi OS Server's scored CVEs is 9.1.

References

Vulnerability data is sourced from the CVE Program; severity, KEV, and exploit signals are aggregated by RadicalNotion.AI.

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