CVE-2026-34908

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.

Affected

Ubiquiti Inc · UniFi OS Server · UDM · UDM-Pro · UDM-SE · UDM-Pro-Max · UDM-Beast

CVSS v3.1 HACKERONE

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

EPSS

15.21% chance of exploitation in the next 30 days, 97th percentile

CISA KEV

added 2026-06-23

Nuclei

critical · CWE-284

Published

2026-05-22

Updated

2026-06-24

Proof-of-concept exploits (3)

• https://www.pwndefend.com/2026/06/09/cve-2026-34910-exploitation-itw-building-a-botnet-mi…
• Boreas37/CVE-2026-34910-PoC14★ · 2026-08-21
• BoredHackerBlog/unifi_5.0.6_exploitation0★ · 2026-06-14

Nuclei templates (1)

• projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-34908.yaml

Security advisories

• https://community.ui.com/releases/Security-Advisory-Bulletin-064-064/84811c09-4cf4-42ab-b…
• https://www.pwndefend.com/2026/06/09/cve-2026-34910-exploitation-itw-building-a-botnet-mi…

References

• CVE Record
• NVD entry

Related

• CVE-2025-62593
• CVE-2026-17544
• CVE-2026-32475
• CVE-2026-33267
• CVE-2026-34909
• CVE-2026-34910