What is the CVSS score of CVE-2026-3699?

CVE-2026-3699 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-2026-3699?

Yes, a public proof-of-concept exploit is available for CVE-2026-3699. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2026-3699?

Within 24 hours: Inventory all UTT HiPER 810G devices in your environment and document network exposure. Within 7 days: Implement network segmentation to restrict access to affected devices, disable remote management features if not operationally critical, and deploy WAF rules to block malicious requests to /goform/formRemoteControl endpoint. Within 30 days: Monitor vendor communication for security patches and establish upgrade timeline; consider device replacement if patches remain unavailable and business risk justifies capital expenditure.

810g Firmware CVE-2026-3699

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 HiPER 810G device
Exploit

Send oversized input to /goform/formRemoteControl
Execution

Trigger strcpy buffer overflow
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Weakness	CWE CWE-119 OWASP Top 10:2025 A06:2021 - Vulnerable and Outdated Components ASVS 5.0 V15 - Secure Coding and Architecture Bounds checking, buffer size validation MITRE ATT&CK 2 techniques across 2 tactics: Execution,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	UTT HiPER 810G firmware version up to 1.7.7-171114. Requires valid user credentials to access /goform/formRemoteControl endpoint. Default configurations with remote management 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 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 HiPER 810G firmware through version 1.7.7-171114 stems from an unsafe strcpy operation in the /goform/formRemoteControl function that enables unauthenticated attackers to trigger a buffer overflow. Public exploit code exists for this vulnerability, and no patch is currently available, leaving affected devices at immediate risk.

Earlier versions of this analysis (1)

v1 Mar 12, 2026 - 21:55 CVSS 8.8

A security flaw has been discovered in UTT HiPER 810G up to 1.7.7-171114. This impacts the function strcpy of the file /goform/formRemoteControl. [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 security flaw has been discovered in UTT HiPER 810G up to 1.7.7-171114. This impacts the function strcpy of the file /goform/formRemoteControl. The manipulation results in buffer overflow. The attack may be launched remotely. The exploit has been released to the public and may 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 - 15:21 vuln.today

Public exploit code

CVE Published

Mar 08, 2026 - 03:16 nvd

HIGH 8.8

DescriptionCVE.org

A security flaw has been discovered in UTT HiPER 810G up to 1.7.7-171114. This impacts the function strcpy of the file /goform/formRemoteControl. The manipulation results in buffer overflow. The attack may be launched remotely. The exploit has been released to the public and may 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 remote attackers to execute arbitrary code with a CVSS score of 8.8. Organizations using these devices face immediate risk of system compromise, data breach, and operational disruption, particularly if devices are internet-facing or accessible to untrusted networks.

Business Impact: High

Compensating Controls

Implement network access controls restricting connectivity to affected devices; disable or isolate the /goform/formRemoteControl functionality if operationally feasible; deploy WAF rules to filter requests to vulnerable endpoints; segment affected devices on isolated VLANs with strict egress filtering; enable comprehensive logging and monitoring for suspicious activity; consider temporary device decommissioning for non-critical deployments pending patch availability.

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

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.