What is the CVSS score of CVE-2026-2188?

CVE-2026-2188 has a CVSS 3.1 base score of 7.2 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.4%.

Is there a public PoC exploit available for CVE-2026-2188?

Yes, a public proof-of-concept exploit is available for CVE-2026-2188. Prioritise patching immediately. EPSS: 0.4%.

How to fix or mitigate CVE-2026-2188?

Within 24 hours: Audit all UTT 进取 521G devices in your environment and document their network locations and criticality. Within 7 days: Implement network segmentation to restrict access to affected devices' management interfaces, disable the /goform/formPdbUpConfig endpoint if operationally feasible, and deploy WAF rules to block malicious requests to this function. Within 30 days: Work with your vendor to obtain a patched firmware version, or evaluate replacement with alternative equipment if patches are unavailable.

521g Firmware CVE-2026-2188

HIGH

Command Injection (CWE-77)

2026-02-08 cna@vuldb.com

Command Injection 521g Firmware Utt

7.2

CVSS 3.1 · NVD

View

Attack ChainAIDerived

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

Access

Send HTTP request to /goform/formPdbUpConfig
Exploit

Inject OS commands in policyNames parameter
Impact

Execute arbitrary commands as device user

Vulnerability Assessment

Weakness	CWE CWE-77 OWASP Top 10:2025 A05:2025 - Injection ASVS 5.0 V1 - Encoding and Sanitization Command injection prevention MITRE ATT&CK 1 technique across 1 tactic: Execution The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Exploitation Conditions	UTT 进取 521G firmware version 3.1.1-190816; high-privilege authenticated access required; policyNames parameter in formPdbUpConfig endpoint must accept unsanitized input
Impact	CVSS 7.2 (HIGH). Attack vector: Network. Complexity: Low. Privileges required: High. User interaction: None. Exploitable via remote/network. Public exploit/POC available.
Exploit ScenarioDerived	A remote attacker could exploit this vulnerability to os command injection.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

No patch listed yet 0.4% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

Remote code execution in UTT 521G firmware 3.1.1-190816 allows unauthenticated attackers to inject arbitrary OS commands through the policyNames parameter in the /goform/formPdbUpConfig endpoint. Public exploit code exists for this vulnerability, and no patch is currently available. Affected organizations using this device should immediately implement network segmentation or disable remote access until a fix is released.

Earlier versions of this analysis (1)

v1 Mar 12, 2026 - 21:55 CVSS 7.2

A vulnerability was determined in UTT 进取 521G 3.1.1-190816. The impacted element is the function sub_446B18 of the file /goform/formPdbUpConfig. [CVSS 7.2 HIGH]

RemediationAI

Monitor vendor advisories for a patch. Restrict network access to the affected service where possible.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

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

Technical ContextAI · show details

Classified as CWE-77 (Command Injection). Affects 521G Firmware. A vulnerability was determined in UTT 进取 521G 3.1.1-190816. The impacted element is the function sub_446B18 of the file /goform/formPdbUpConfig. Executing a manipulation of the argument policyNames can lead to os command injection. It is possible to launch the attack remotely. The exploit has been publicly disclosed and may be utilized.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 7.2 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

PoC Detected

Feb 10, 2026 - 14:57 vuln.today

Public exploit code

CVE Published

Feb 08, 2026 - 22:15 nvd

HIGH 7.2

DescriptionCVE.org

A vulnerability was determined in UTT 进取 521G 3.1.1-190816. The impacted element is the function sub_446B18 of the file /goform/formPdbUpConfig. Executing a manipulation of the argument policyNames can lead to os command injection. It is possible to launch the attack remotely. The exploit has been publicly disclosed and may be utilized.

Executive ViewAI

Why It Matters

A high-severity vulnerability (CVE-2026-2188) affects UTT 进取 521G devices running firmware version 3.1.1-190816, with active public exploits available and no vendor patch currently available. Organizations using this equipment face potential unauthorized access or system compromise through the vulnerable configuration upload function, requiring immediate mitigation steps to reduce exposure.

Business Impact: High

Compensating Controls

Implement network-based access controls limiting management interface access to authorized administrative networks only; deploy WAF or IDS signatures to detect exploitation attempts against /goform/formPdbUpConfig; disable the PDB configuration upload feature if not operationally required; isolate affected devices to restricted network segments; monitor for suspicious file upload activities and configuration changes on vulnerable devices.

Threat Intelligence Overview

EPSS Score

0.4%

Top 40% exploitable

Exploit

POC

Public exploit code exists

Data Quality

5 sources

Confidence: Medium

NVD

CVE.org

EPSS

GitHub

VulDB

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 HIGH

CISA KEV No

Public POC Yes

EPSS 0.4%

Patch available No

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

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.