What is the CVSS score of CVE-2026-2935?

CVE-2026-2935 has a CVSS 3.1 base score of 7.2 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Is there a public PoC exploit available for CVE-2026-2935?

Yes, a public proof-of-concept exploit is available for CVE-2026-2935. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2026-2935?

Within 24 hours: inventory all UTT HiPER 810G devices and isolate affected systems from critical networks if possible. Within 7 days: implement network-level access controls restricting access to /goform/ConfigExceptMSN endpoint and deploy WAF rules blocking malicious payloads to this URI. Within 30 days: contact UTT for patch timeline, evaluate replacement options, or implement complete network segmentation for affected devices with enhanced monitoring.

810g Firmware CVE-2026-2935

HIGH

Buffer Overflow (CWE-119)

2026-02-22 cna@vuldb.com

Buffer Overflow 810g Firmware Utt

7.2

CVSS 3.1 · NVD

View

Attack ChainAIDerived

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

Access

Access /goform/ConfigExceptMSN endpoint
Exploit

Craft oversized remark parameter
Execution

Trigger strcpy buffer overflow
Impact

Execute arbitrary code as admin

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Weakness	CWE CWE-119 OWASP Top 10:2025 A06:2021 - Vulnerable and Outdated Components ASVS 5.0 V15 - Secure Coding and Architecture Bounds checking, buffer size validation MITRE ATT&CK 2 techniques across 2 tactics: Execution,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 with /goform/ConfigExceptMSN endpoint accessible. Attacker requires high privilege authentication credentials to submit POST request with malicious remark parameter to vulnerable strcpy function.
Impact	CVSS 7.2 (HIGH). Attack vector: Network. Complexity: Low. Privileges required: High. User interaction: None. Exploitable via remote/network. Public exploit/POC available.
Exploit ScenarioDerived	A remote attacker could exploit this vulnerability to 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 allows unauthenticated attackers to overflow a buffer via the remark parameter in the /goform/ConfigExceptMSN endpoint. Public exploit code is available and no patch has been released, creating immediate risk for exposed devices.

Earlier versions of this analysis (1)

v1 Mar 12, 2026 - 22:04 CVSS 7.2

A weakness has been identified in UTT HiPER 810G up to 1.7.7-171114. This issue affects the function strcpy of the file /goform/ConfigExceptMSN. [CVSS 7.2 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. This issue affects the function strcpy of the file /goform/ConfigExceptMSN. Executing a manipulation of the argument remark can lead to buffer overflow. The attack can be executed remotely. 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 7.2 HIGH

AV:N/AC:L/PR:H/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

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

PoC Detected

Feb 24, 2026 - 17:17 vuln.today

Public exploit code

CVE Published

Feb 22, 2026 - 09:16 nvd

HIGH 7.2

DescriptionCVE.org

A weakness has been identified in UTT HiPER 810G up to 1.7.7-171114. This issue affects the function strcpy of the file /goform/ConfigExceptMSN. Executing a manipulation of the argument remark can lead to buffer overflow. The attack can be executed remotely. The exploit has been made available to the public and could be used for attacks.

Executive ViewAI

Why It Matters

A buffer overflow vulnerability in UTT HiPER 810G devices (versions up to 1.7.7-171114) allows unauthenticated remote code execution through a configuration endpoint. Organizations using affected devices face immediate risk of system compromise and data breach, with no vendor patch currently available.

Business Impact: High

Compensating Controls

Implement Web Application Firewall (WAF) rules to block requests to /goform/ConfigExceptMSN endpoint; restrict network access to affected devices via firewall rules; disable remote management features if operationally feasible; deploy intrusion detection/prevention systems (IDS/IPS) with signatures for strcpy buffer overflow attempts; segment affected devices on isolated VLANs with strict access controls; enable enhanced logging and monitoring for suspicious activity; consider temporary shutdown of non-critical devices until patch availability.

Threat Intelligence Overview

EPSS Score

0.1%

Top 72% 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: +36

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.