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.

CVSS v3.1

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

EPSS

85.19% chance of exploitation in the next 30 days, 100th 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-PoC6★ · 2026-08-21
• BoredHackerBlog/unifi_5.0.6_exploitation

Nuclei templates (1)

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

References

• CVE Record
• NVD entry

Related

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