CVE-2026-34908 — CRITICAL (10.0)

Q: What is CVE-2026-34908?

CVE-2026-34908 is a vulnerability with a CVSS score of 10.0 (CRITICAL). 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.

Q: How severe is CVE-2026-34908?

CVE-2026-34908 has been rated CRITICAL with a CVSS base score of 10.0/10. This is considered a critical vulnerability requiring immediate attention.

Q: Is there a patch for CVE-2026-34908?

Check the references section above for vendor advisories and patch information. Affected products include: Ui Unifi Os Server, Ui Unifi Cloud Gateway Industrial Firmware, Ui Unifi Cloud Gateway Industrial, Ui Unifi Dream Machine Firmware, Ui Unifi Dream Machine.

Vulnerability Description

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

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Ui	Unifi Os Server	< 5.0.8
Ui	Unifi Cloud Gateway Industrial Firmware	< 5.1.12
Ui	Unifi Cloud Gateway Industrial	-
Ui	Unifi Dream Machine Firmware	< 5.1.12
Ui	Unifi Dream Machine	-
Ui	Unifi Dream Machine Pro Firmware	< 5.1.12
Ui	Unifi Dream Machine Pro	-
Ui	Unifi Dream Machine Special Edition Firmware	< 5.1.12
Ui	Unifi Dream Machine Special Edition	-
Ui	Unifi Dream Machine Pro Max Firmware	< 5.1.12
Ui	Unifi Dream Machine Pro Max	-
Ui	Enterprise Fortress Gateway Firmware	< 5.1.12
Ui	Enterprise Fortress Gateway	-
Ui	Unifi Dream Wall Firmware	< 5.1.12
Ui	Unifi Dream Wall	-
Ui	Unifi Dream Router Firmware	< 5.1.12
Ui	Unifi Dream Router	-
Ui	Unifi Dream Router 7 Firmware	< 5.1.12
Ui	Unifi Dream Router 7	-
Ui	Unifi Express 7 Firmware	< 5.1.12

Related Weaknesses (CWE)

CWE-284

References

https://community.ui.com/releases/Security-Advisory-Bulletin-064-064/84811c09-4cPatchVendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-US Government Resource
https://www.pwndefend.com/2026/06/09/cve-2026-34910-exploitation-itw-building-a-ExploitThird Party Advisory

FAQ

What is CVE-2026-34908?

CVE-2026-34908 is a vulnerability with a CVSS score of 10.0 (CRITICAL). 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.

How severe is CVE-2026-34908?

CVE-2026-34908 has been rated CRITICAL with a CVSS base score of 10.0/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-34908?

Check the references section above for vendor advisories and patch information. Affected products include: Ui Unifi Os Server, Ui Unifi Cloud Gateway Industrial Firmware, Ui Unifi Cloud Gateway Industrial, Ui Unifi Dream Machine Firmware, Ui Unifi Dream Machine.