CVE-2026-34908

⛔ critical

Summary

A malicious actor with access to the network could exploit an Improper Access Control vulnerability found in UniFi OS devices to make unauthorized changes to the system.

CVSS Score

10.0

Critical

EPSS Score

2.5

Exploit Probability

Published Date

2026-05-22

First Seen: 2026-05-23

📊 Relative Risk Intelligence

This CVE is Extremely High Risk - more severe than 100.0% of all 330,193 vulnerabilities in our database.

Top 5% most severe

Severity Percentile

🎯 CISA SSVC Assessment Updated: May 22, 2026

🔍 Exploitation Status

Active

Exploits detected in the wild

⚙️ Automatable

YES

Can be exploited automatically

💥 Technical Impact

Total

Complete system compromise possible

SSVC data provided by CISA

Last Modified 2026-06-24

Source NVD 🔗

CVSS Vector 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

CWE IDs (Weakness Types)

CWE-284

📦 Affected Products 3

Vendor	Product	Status	Affected Versions
ui	unifi_dream_machine_firmware	Affected	< 5.1.12
ui	unifi_dream_machine_pro_firmware	Affected	< 5.1.12
ui	unifi_os_server	Affected	< 5.0.8

🔗 References 3

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

Patch Vendor Advisory

https://www.cisa.gov/known-exploited-vulnerabilities...

US Government Resource

https://www.pwndefend.com/2026/06/09/cve-2026-34910-...

Exploit Third Party Advisory

🔗 Related CVEs 5

CVE ID	Severity	CVSS	EPSS	Summary	Published
CVE-2026-34909	⛔ critical	10.0	2.3	A malicious actor with access to the network could exploit a Path Traversal vulnerability found in UniFi OS devices to a...	2026-05-22
CVE-2026-34910	⛔ critical	10.0	78.6	A malicious actor with access to the network could exploit an Improper Input Validation vulnerability found in UniFi OS ...	2026-05-22
CVE-2026-34911	⚠️ high	7.7	0.7	A malicious actor with access to the network and low privileges could exploit a Path Traversal vulnerability found in Un...	2026-05-22
CVE-2026-33000	⛔ critical	9.1	1.1	A malicious actor with access to the network and high privileges could exploit an Improper Input Validation vulnerabilit...	2026-05-22
CVE-2023-24104	⛔ critical	9.8	0.0	Ubiquiti Networks UniFi Dream Machine Pro v7.2.95 allows attackers to bypass domain restrictions via crafted packets.	2023-02-23

These CVEs affect the same products