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%.

Which versions of 521g Firmware are affected by CVE-2026-2188?

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.

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

7.2

CVSS 3.1 · NVD

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

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:55 vuln.today

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.

AnalysisAI

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. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access

Send HTTP request to /goform/formPdbUpConfig

Exploit

Inject OS commands in policyNames parameter

Impact

Execute arbitrary commands as device user

Access

Send HTTP request to /goform/formPdbUpConfig

Exploit

Inject OS commands in policyNames parameter

Impact

Execute arbitrary commands as device user

Vulnerability AssessmentAI

Exploitation	UTT 进取 521G firmware version 3.1.1-190816; high-privilege authenticated access required; policyNames parameter in formPdbUpConfig endpoint must accept unsanitized input Additional conditions and limiting factors are described in the full assessment.
Risk Assessment	CVSS 7.2 (HIGH). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	A remote attacker could exploit this vulnerability to os command injection.
Remediation	Monitor vendor advisories for a patch. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours: Audit all UTT 进取 521G devices in your environment and document their network locations and criticality. …

Threat intelligence, references, and detailed analysis are available after sign-in.

CVE-2026-2188 vulnerability details – vuln.today

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521g Firmware CVE-2026-2188

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

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Attack ChainAIDerived

Vulnerability AssessmentAI

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External POC / Exploit Code