What is the CVSS score of CVE-2026-3700?

CVE-2026-3700 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-2026-3700?

Yes, a public proof-of-concept exploit is available for CVE-2026-3700. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2026-3700?

Within 24 hours: Inventory all UTT HiPER 810G devices in production and isolate affected units from untrusted networks; implement network access controls restricting traffic to the vulnerable /goform/formConfigDnsFilterGlobal endpoint. Within 7 days: Deploy WAF rules or IDS/IPS signatures to block malicious requests to the affected endpoint; disable DNS filter configuration features if operationally feasible. Within 30 days: Evaluate replacement of affected devices with alternative vendors; contact UTT for patch availability status and timeline; document all compensating controls in risk register pending vendor remediation.

810g Firmware CVE-2026-3700

HIGH

Buffer Overflow (CWE-119)

2026-03-08 cna@vuldb.com

Buffer Overflow 810g 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
Exploit

Send crafted DNS filter config
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Weakness	CWE CWE-119 OWASP Top 10:2025 A06:2021 - Vulnerable and Outdated Components ASVS 5.0 V15 - Secure Coding and Architecture Bounds checking, buffer size validation MITRE ATT&CK 2 techniques across 2 tactics: Execution,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	UTT HiPER 810G firmware version up to 1.7.7-171114. Requires valid login credentials to access /goform/formConfigDnsFilterGlobal endpoint. Device must have web management interface enabled.
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 vulnerability to compromise the affected system.

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 HiPER 810G firmware up to version 1.7.7-171114 through a stack buffer overflow in the DNS filter configuration function allows authenticated attackers to execute arbitrary commands with full system privileges. Public exploit code is available for this vulnerability, increasing the risk of active exploitation. No patch is currently available, requiring organizations to implement network-level mitigations or device replacement until a fix is released.

Earlier versions of this analysis (1)

v1 Mar 12, 2026 - 21:55 CVSS 8.8

A weakness has been identified in UTT HiPER 810G up to 1.7.7-171114. Affected is the function strcpy of the file /goform/formConfigDnsFilterGlobal. [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 810G Firmware. A weakness has been identified in UTT HiPER 810G up to 1.7.7-171114. Affected is the function strcpy of the file /goform/formConfigDnsFilterGlobal. This manipulation causes buffer overflow. Remote exploitation of the attack is possible. The exploit has been made available to the public and could be used for attacks.

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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

Mar 10, 2026 - 15:11 vuln.today

Public exploit code

CVE Published

Mar 08, 2026 - 03:16 nvd

HIGH 8.8

DescriptionCVE.org

A weakness has been identified in UTT HiPER 810G up to 1.7.7-171114. Affected is the function strcpy of the file /goform/formConfigDnsFilterGlobal. This manipulation causes buffer overflow. Remote exploitation of the attack is possible. The exploit has been made available to the public and could be used for attacks.

Executive ViewAI

Why It Matters

A critical buffer overflow vulnerability in UTT HiPER 810G devices (versions up to 1.7.7-171114) allows unauthenticated attackers to execute arbitrary code with high severity (CVSS 8.8). Organizations using this networking equipment face immediate risk of system compromise, data breach, and operational disruption, particularly concerning as public exploits are available and no vendor patch has been released.

Business Impact: Severe

Compensating Controls

Implement network segmentation to restrict management access to affected devices; deploy WAF/IPS rules blocking requests to /goform/formConfigDnsFilterGlobal; disable remote DNS filter configuration functionality; restrict device access to trusted internal networks only; monitor for exploitation attempts via logging and behavioral analytics; consider temporary device decommissioning if alternate solutions exist; establish vendor SLA commitment for security patch timeline.

Threat Intelligence Overview

EPSS Score

0.1%

Top 79% 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

Out-of-Cycle

Exploitation· derived

Poc

System Exposure· derived

Open

Automatable· derived

Human Impact

Very 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.