What is the CVSS score of CVE-2026-2071?

CVE-2026-2071 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%.

Is there a public PoC exploit available for CVE-2026-2071?

Yes, a public proof-of-concept exploit is available for CVE-2026-2071. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2026-2071?

Within 24 hours: Identify and inventory all UTT 进取 520W devices running version 1.7.7-180627 in your environment; isolate affected devices from critical networks if possible. Within 7 days: Implement network segmentation to restrict access to the vulnerable /goform/formP2PLimitConfig endpoint; deploy WAF rules to block malicious POST requests to this function. Within 30 days: Contact UTT for patch availability and deployment timeline; evaluate device replacement or decommissioning if patches remain unavailable; conduct forensic analysis for evidence of exploitation.

520w Firmware CVE-2026-2071

HIGH

Buffer Overflow (CWE-119)

2026-02-07 cna@vuldb.com

Buffer Overflow 520w Firmware Utt

8.8

CVSS 3.1 · NVD

View

Attack ChainAIDerived

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

Access

Authenticate to UTT device
Delivery

Send crafted request to /goform/formP2PLimitConfig
Exploit

Manipulate 'except' parameter with oversized input
Execution

Overflow strcpy buffer
Impact

Execute arbitrary code with device privileges

Vulnerability Assessment

Weakness	CWE CWE-119 OWASP Top 10:2025 A06:2021 - Vulnerable and Outdated Components ASVS 5.0 V15 - Secure Coding and Architecture Bounds checking, buffer size validation MITRE ATT&CK 2 techniques across 2 tactics: Execution, Privilege Escalation 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	Attacker must have valid login credentials for UTT 进取 520W version 1.7.7-180627. The /goform/formP2PLimitConfig endpoint must be accessible and the 'except' parameter must be passed to the vulnerable strcpy function without bounds checking.
Impact	CVSS 8.8 (HIGH). Attack vector: Network. Complexity: Low. Privileges required: Low. User interaction: None. Exploitable via remote/network. Public exploit/POC available.
Exploit ScenarioDerived	A remote attacker could exploit this flaw, buffer overflow.

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

No patch listed yet 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

Unauthenticated attackers can exploit a buffer overflow in the UTT 520W Firmware's P2P configuration function via a crafted request to achieve remote code execution with high privileges. The vulnerability requires only network access and low complexity to exploit, with public exploit code already available. No patch has been released by the vendor despite early notification.

Earlier versions of this analysis (1)

v1 Mar 12, 2026 - 21:54 CVSS 8.8

A vulnerability was found in UTT 进取 520W 1.7.7-180627. The impacted element is the function strcpy of the file /goform/formP2PLimitConfig. [CVSS 8.8 HIGH]

RemediationAI

Monitor vendor advisories for a patch. Enable ASLR, DEP/NX, and stack canaries where possible. 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-119 (Buffer Overflow). Affects 520W Firmware. A vulnerability was found in UTT 进取 520W 1.7.7-180627. The impacted element is the function strcpy of the file /goform/formP2PLimitConfig. Performing a manipulation of the argument except results in buffer overflow. The attack is possible to be carried out remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.

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Exploit and PoC references, threat intelligence from 22 sources

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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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

PoC Detected

Feb 13, 2026 - 18:55 vuln.today

Public exploit code

CVE Published

Feb 07, 2026 - 01:15 nvd

HIGH 8.8

DescriptionCVE.org

A vulnerability was found in UTT 进取 520W 1.7.7-180627. The impacted element is the function strcpy of the file /goform/formP2PLimitConfig. Performing a manipulation of the argument except results in buffer overflow. The attack is possible to be carried out remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.

Executive ViewAI

Why It Matters

A critical buffer overflow vulnerability in UTT 进取 520W devices (version 1.7.7-180627) allows remote attackers to execute arbitrary code with a CVSS score of 8.8. Organizations using this device model face immediate risk of system compromise, data breach, and operational disruption, with active exploits already publicly available.

Business Impact: High

Compensating Controls

Implement Web Application Firewall (WAF) rules blocking access to /goform/formP2PLimitConfig endpoint; restrict network access to affected devices using firewall policies (deny external connections, limit to authorized IPs only); disable P2P limit configuration feature if operationally feasible; monitor device logs for exploitation attempts; segment affected devices from critical infrastructure and sensitive data systems.

Threat Intelligence Overview

EPSS Score

0.1%

Top 74% 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 0.1%

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.

SSVC AssessmentENISA

SSVC Decision· derived

Scheduled

Exploitation· derived

Poc

System Exposure· derived

Open

Automatable· derived

Human Impact

High

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +44

PoC: +20

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Buffer Overflow HIGH

A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.