What is the CVSS score of CVE-2026-2070?

CVE-2026-2070 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-2026-2070?

Yes, a public proof-of-concept exploit is available for CVE-2026-2070. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2026-2070?

Within 24 hours: Inventory all UTT 进取 520W 1.7.7-180627 devices in your environment and isolate affected units from production networks if possible. Within 7 days: Implement network segmentation to restrict management access to these devices and deploy WAF rules to block requests to /goform/formPolicyRouteConf endpoint. Within 30 days: Develop and execute a device replacement plan with the vendor or transition to alternative solutions; establish monitoring for exploitation attempts.

520w Firmware CVE-2026-2070

HIGH

Buffer Overflow (CWE-119)

2026-02-06 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 device management interface
Delivery

Craft oversized GroupName parameter
Exploit

Send POST to /goform/formPolicyRouteConf
Execution

Overflow strcpy buffer
Impact

Execute arbitrary code

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Weakness	CWE CWE-119 OWASP Top 10:2025 A06:2021 - Vulnerable and Outdated Components ASVS 5.0 V15 - Secure Coding and Architecture Bounds checking, buffer size validation MITRE ATT&CK 2 techniques across 2 tactics: Execution,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	Authenticated access to UTT 进取 520W firmware version 1.7.7-180627 management interface; ability to POST requests to /goform/formPolicyRouteConf endpoint with malicious GroupName parameter exceeding buffer limits.
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

Remote code execution in UTT 520W firmware versions up to 1.7.7-180627 through a buffer overflow in the /goform/formPolicyRouteConf endpoint allows authenticated attackers to execute arbitrary commands on affected devices. Public exploit code is available for this vulnerability, and no patch has been released despite vendor notification. The flaw stems from improper bounds checking in the GroupName parameter handling.

Earlier versions of this analysis (1)

v1 Mar 12, 2026 - 21:54 CVSS 8.8

A vulnerability has been found in UTT 进取 520W 1.7.7-180627. The affected element is the function strcpy of the file /goform/formPolicyRouteConf. [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 has been found in UTT 进取 520W 1.7.7-180627. The affected element is the function strcpy of the file /goform/formPolicyRouteConf. Such manipulation of the argument GroupName leads to buffer overflow. The attack can be executed remotely. The exploit has been disclosed to the public and may 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 06, 2026 - 23:15 nvd

HIGH 8.8

DescriptionCVE.org

A vulnerability has been found in UTT 进取 520W 1.7.7-180627. The affected element is the function strcpy of the file /goform/formPolicyRouteConf. Such manipulation of the argument GroupName leads to buffer overflow. The attack can be executed remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Executive ViewAI

Why It Matters

A critical vulnerability (CVE-2026-2070) affecting UTT 进取 520W devices allows remote code execution through a buffer overflow in the policy route configuration function. Organizations using this device model are at immediate risk of unauthorized system access and network compromise, with no vendor patch currently available.

Business Impact: High

Compensating Controls

Implement network segmentation to restrict administrative access to affected devices; deploy WAF/IPS rules to block HTTP requests to the /goform/formPolicyRouteConf endpoint; disable policy routing configuration features if not operationally critical; restrict management interfaces to trusted IP ranges only; monitor for suspicious connection attempts to affected devices; consider disabling remote management access until patch availability is confirmed.

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.