What is the CVSS score of CVE-2026-2067?

CVE-2026-2067 has a CVSS 3.1 base score of 8.8 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Which versions of 520w Firmware are affected by CVE-2026-2067?

A critical buffer overflow vulnerability (CVE-2026-2067) has been identified in UTT 进取 520W devices affecting time group configuration functions.

Is there a public PoC exploit available for CVE-2026-2067?

Yes, a public proof-of-concept exploit is available for CVE-2026-2067. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2026-2067?

Within 24 hours: Identify and inventory all UTT 进取 520W 1.7.7-180627 devices across the organization and assess network exposure. Within 7 days: Implement network segmentation to restrict administrative access to affected devices and deploy WAF rules to block malicious requests targeting /goform/formTimeGroupConfig. Within 30 days: Evaluate device replacement options, contact vendor for security advisories, and develop a remediation roadmap that may include hardware upgrade or migration to alternative solutions with vendor patch availability.

520w Firmware CVE-2026-2067

HIGH

Buffer Overflow (CWE-119)

2026-02-06 cna@vuldb.com

Buffer Overflow 520w Firmware

8.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

8.8 HIGH

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

PoC Detected

Feb 10, 2026 - 15:11 vuln.today

Public exploit code

CVE Published

Feb 06, 2026 - 21:16 nvd

HIGH 8.8

DescriptionCVE.org

A security vulnerability has been detected in UTT 进取 520W 1.7.7-180627. This vulnerability affects the function strcpy of the file /goform/formTimeGroupConfig. The manipulation of the argument year1 leads to buffer overflow. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

AnalysisAI

Remote code execution in UTT 520W firmware through a buffer overflow in the /goform/formTimeGroupConfig endpoint allows authenticated attackers to achieve complete system compromise via manipulation of the year1 parameter. Public exploit code exists for this vulnerability, and no patch is currently available from the vendor despite early disclosure notification. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access

Authenticate to UTT device

Delivery

Access /goform/formTimeGroupConfig endpoint

Exploit

Submit oversized year1 parameter

Execution

Trigger strcpy buffer overflow

Impact

Execute arbitrary code with device privileges

Access

Authenticate to UTT device

Delivery

Access /goform/formTimeGroupConfig endpoint

Exploit

Submit oversized year1 parameter

Execution

Trigger strcpy buffer overflow

Impact

Execute arbitrary code with device privileges

Vulnerability AssessmentAI

Exploitation	Valid login credentials required for UTT 进取 520W firmware version 1.7.7-180627. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment	CVSS 8.8 (HIGH). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	A remote attacker could exploit this flaw, buffer overflow.
Remediation	Monitor vendor advisories for a patch. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours: Identify and inventory all UTT 进取 520W 1.7.7-180627 devices across the organization and assess network exposure. …

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

CVE-2026-2067 vulnerability details – vuln.today

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520w Firmware CVE-2026-2067

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