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UID Enterprise Agent CVE-2026-47367

| EUVDEUVD-2026-36379 CRITICAL
Improper Input Validation (CWE-20)
2026-06-12 hackerone GHSA-4fpg-88pm-v9hh
9.9
CVSS 3.1 · Vendor: hackerone
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Recon
    Obtain low-privilege agent account
  2. Delivery
    Reach UID Enterprise Agent over network
  3. Exploit
    Submit crafted input with shell metacharacters
  4. Install
    Bypass improper input validation
  5. C2
    Inject OS command into agent execution
  6. Execute
    Execute arbitrary commands on host
  7. Impact
    Pivot across scope into Ubiquiti management plane

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V2 - Validation and Business Logic Input validation, allowlisting
Exploitation Conditions

Attacker must have network reachability to the UID Enterprise Agent service and a valid low-privilege account on the agent (PR:L per CVSS), but does not need administrative rights or any user interaction (UI:N). No special non-default configuration is called out in the description - any deployment of UID Enterprise Agent exposing its service to holders of low-privilege credentials is exploitable. Exploitation is limited by the requirement that the attacker first obtain such a low-privileged credential and by any network segmentation restricting who can reach the agent.

Impact

All signals point to high real-world risk: CVSS 3.1 vector AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H scores 9.9, indicating network-reachable, low-complexity exploitation requiring only low privileges and no user interaction, with cross-scope full-impact consequences. There is no public exploit identified at time of analysis and the CVE is not listed in CISA KEV, so EPSS-style mass-exploitation pressure is not yet evidenced. The PR:L requirement is the main mitigating factor - any low-privileged account or low-trust network role that can reach the agent is sufficient, which in enterprise identity-agent deployments is a low bar. EPSS score was not provided in the input, so probabilistic exploitation likelihood cannot be quantified.

Exploit ScenarioDerived

An attacker who has obtained a low-privileged account on the UID Enterprise Agent - for example via a phished helpdesk credential or a reused tenant identity - connects to the agent over the network and submits a crafted request containing shell metacharacters in a field that the agent passes unsanitized into an OS command. The agent executes the injected command on the host with its own privileges, enabling the attacker to read configuration, pivot into the Ubiquiti management plane, or stage further tools. No public exploit identified at time of analysis, but the low complexity makes weaponization straightforward once the vulnerable parameter is known.

Act Now Prioritize within 24-48h. Why: CRITICAL severity.
Patch available 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Jun 12, 2026

Command injection in Ubiquiti UID Enterprise Agent allows a low-privileged attacker with network access to execute arbitrary commands on the host device by abusing improper input validation. The CVSS 9.9 score reflects a scope change with high confidentiality, integrity, and availability impact, and no public exploit identified at time of analysis. Defenders should treat this as a high-priority patch item given the low attack complexity and minimal privilege requirement.

RemediationAI

Patch available per vendor advisory - consult Ubiquiti Security Advisory Bulletin 065 at https://community.ui.com/releases/Security-Advisory-Bulletin-065-065/aa46a22b-fc43-4eae-9382-6fc8feda967a for the fixed UID Enterprise Agent build and upgrade all deployed agents to that version. Until patching is complete, restrict network reachability to the UID Enterprise Agent management/API interface to trusted administrative subnets via host or network ACLs, and tighten the population of accounts holding the low-privilege role required for exploitation (audit and revoke unnecessary access), accepting that ACL changes may disrupt legitimate identity-bridging traffic if the agent is broadly consumed by other UniFi components. Monitor host process trees on systems running the agent for unexpected child processes (shell, scripting interpreters) spawned by the agent service as a detection compensating control.

Affected VersionsENISA

UID Enterprise Agent 0 <1.61.4

Affected Packages

euvd uid_enterprise_agent fix: 1.61.4

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

UID Enterprise Agent is Ubiquiti's identity/access-management endpoint agent used in enterprise deployments to bridge identity providers and network access enforcement on Ubiquiti infrastructure. The root cause class is CWE-20 (Improper Input Validation): user-supplied input is passed to a downstream command-execution context without sufficient sanitization, allowing operating-system command injection on the host running the agent. Because the agent typically runs with elevated privileges to manage host or network state, injected commands inherit that execution context, which aligns with the CVSS scope-change (S:C) designation.

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Severity by source

Vendor (hackerone) PRIMARY 9.9 CRITICAL
AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
vuln.today AI 9.9 CRITICAL

Network-reachable agent, low-complexity injection, requires a low-privileged account (PR:L), no user interaction; command execution as the agent crosses into host/management scope with full CIA impact.

3.1 AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

Primary rating from Vendor (hackerone).

CVSS VectorVendor: hackerone

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

1
Patch available
Jun 12, 2026 - 05:01 EUVD

DescriptionCVE.org

A malicious actor with access to the network and low privileges could exploit an Improper Input Validation vulnerability found in UID Enterprise Agent to execute a Command Injection on the host device.

Executive ViewAI

Why It Matters

Ubiquiti UID Enterprise Agent contains a critical vulnerability (CVE-2026-47367, CVSS 9.9) enabling remote command execution on networked devices; no patch is currently available. Organizations operating this product face immediate risk of complete system compromise across their Ubiquiti infrastructure, requiring urgent defensive measures.

Business Impact: Severe
Compensating Controls

No vendor-released patch identified at time of analysis. Interim mitigations: (1) Restrict network access to Ubiquiti UID Enterprise Agent through firewall rules and network segmentation; (2) Disable the Agent on non-critical systems where operationally feasible; (3) Deploy network-based intrusion detection signatures to detect command injection patterns; (4) Monitor affected systems for suspicious process execution and unexpected network connections; (5) Implement strict access controls limiting exposure to trusted internal networks only.

Threat Intelligence Overview

EPSS Score
0.2%
Top 57% exploitable
Social Media
2
Sightings
Data Quality
5 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity CRITICAL
CISA KEV No
Public POC No
EPSS 0.2%
Patch available Yes
Active threat No
Deciding rule
CRITICAL severity
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
No
Human Impact
Very High
Technical Impact
Total

Priority Score

50
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +50
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

OS command injection occurs when an application passes unsanitized user input directly into system shell commands.

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