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Critical · 10.0 Known exploited Scanner template Public exploit CVE-2026-34908 EUVD-2026-31383GHSA-p8c5-xwrc-584f

A malicious actor with access to the network could exploit an Improper Access Control vulnerability found in UniFi OS devices to make unaut…

Published May 22, 2026 · Updated Jun 24, 2026 · Assigned by hackerone

Vendor: Ubiquiti Product: EFG Product: ENVR Product: ENVR-Core Product: Express 7 Product: UCG-Fiber Product: UCG-Industrial Product: UCG-Max Product: UCG-Ultra Product: UCK Product: UCK-Enterprise Product: UCKP Product: UDM Product: UDM-Beast Product: UDM-Pro Product: UDM-Pro-Max Product: UDM-SE Product: UDR Product: UDR-5G Product: UDR7 Product: UDW Product: UNAS-2 Product: UNAS-4 Product: UNAS-Pro Product: UNAS-Pro-4 Product: UNAS-Pro-8 Product: UniFi OS Server Product: UNVR Product: UNVR-G2 Product: UNVR-G2-Pro Product: UNVR-Instant Product: UNVR-Pro Category: Network devices

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.

Affected products

VendorProductAffectedFixed
Ubiquiti UniFi OS Server < 5.0.8 5.0.8
Ubiquiti UDM < 5.1.12 5.1.12
Ubiquiti UDM-Pro < 5.1.12 5.1.12
Ubiquiti UDM-SE < 5.1.12 5.1.12
Ubiquiti UDM-Pro-Max < 5.1.12 5.1.12
Ubiquiti UDM-Beast < 5.1.11 5.1.11
Ubiquiti EFG < 5.1.12 5.1.12
Ubiquiti UDW < 5.1.12 5.1.12
Ubiquiti UDR < 5.1.12 5.1.12
Ubiquiti UDR7 < 5.1.12 5.1.12
Ubiquiti UDR-5G < 5.1.12 5.1.12
Ubiquiti Express 7 < 5.1.12 5.1.12
Ubiquiti UNVR < 5.1.12 5.1.12
Ubiquiti UNVR-Pro < 5.1.12 5.1.12
Ubiquiti UNVR-Instant < 5.1.12 5.1.12
Ubiquiti UNVR-G2 < 5.1.12 5.1.12
Ubiquiti UNVR-G2-Pro < 5.1.12 5.1.12
Ubiquiti ENVR < 5.1.12 5.1.12
Ubiquiti ENVR-Core < 5.1.12 5.1.12
Ubiquiti UNAS-2 < 5.1.10 5.1.10
Ubiquiti UNAS-4 < 5.1.10 5.1.10
Ubiquiti UNAS-Pro < 5.1.10 5.1.10
Ubiquiti UNAS-Pro-4 < 5.1.10 5.1.10
Ubiquiti UNAS-Pro-8 < 5.1.10 5.1.10
Ubiquiti UCKP < 5.1.12 5.1.12
Ubiquiti UCK < 5.1.12 5.1.12
Ubiquiti UCK-Enterprise < 5.1.12 5.1.12
Ubiquiti UCG-Ultra < 5.1.12 5.1.12
Ubiquiti UCG-Max < 5.1.12 5.1.12
Ubiquiti UCG-Fiber < 5.1.12 5.1.12
Ubiquiti UCG-Industrial < 5.1.12 5.1.12

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 1 repository

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Automated scanner template

A ready-made Nuclei template detects this vulnerability automatically. Vulnerabilities with public scanner templates are typically probed across the internet soon after the template appears — exposed systems should be patched first.

Source: projectdiscovery/nuclei-templates (MIT) — updated daily. Only links are listed.

Advisories 1

References