What is the CVSS score of CVE-2026-3379?

CVE-2026-3379 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-2026-3379?

Yes, a public proof-of-concept exploit is available for CVE-2026-3379. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2026-3379?

Within 24 hours: Identify and inventory all Tenda F453 1.0.0.3 devices in your environment and isolate them from critical network segments. Within 7 days: Implement network-level mitigations including WAF rules blocking access to /goform/SetIpBind endpoint, restrict administrative access to these devices, and disable IP binding functionality if operationally feasible. Within 30 days: Develop a hardware replacement strategy to migrate away from affected devices, contact Tenda for patch availability status, and establish monitoring for exploitation attempts.

DNS CVE-2026-3379

HIGH

Buffer Overflow (CWE-119)

2026-03-01 cna@vuldb.com

Buffer Overflow DNS Tenda F453 Firmware

8.8

CVSS 3.1 · NVD

View

Attack ChainAIDerived

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

Access

Authenticate to Tenda F453 web interface
Delivery

Send crafted HTTP request to /goform/SetIpBind
Exploit

Inject oversized page parameter
Execution

Trigger buffer overflow in fromSetIpBind
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Weakness	CWE CWE-119 OWASP Top 10:2025 A06:2021 - Vulnerable and Outdated Components ASVS 5.0 V15 - Secure Coding and Architecture Bounds checking, buffer size validation MITRE ATT&CK 2 techniques across 2 tactics: Execution,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	Tenda F453 running firmware 1.0.0.3; attacker requires valid web interface credentials (PR:L); vulnerable /goform/SetIpBind endpoint must be accessible; buffer overflow in page parameter handling of fromSetIpBind function
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 Tenda F453 1.0.0.3 DNS firmware via a buffer overflow in the /goform/SetIpBind endpoint allows authenticated attackers to achieve full system compromise. The vulnerability stems from improper input validation of the page parameter and has public exploit code available. An attacker with network access and valid credentials can execute arbitrary code with complete system privileges.

Earlier versions of this analysis (1)

v1 Mar 12, 2026 - 22:05 CVSS 8.8

A vulnerability has been found in Tenda F453 1.0.0.3. This vulnerability affects the function fromSetIpBind of the file /goform/SetIpBind. [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 F453 Firmware. A vulnerability has been found in Tenda F453 1.0.0.3. This vulnerability affects the function fromSetIpBind of the file /goform/SetIpBind. The manipulation of the argument page leads to buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.

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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 03, 2026 - 17:33 vuln.today

Public exploit code

CVE Published

Mar 01, 2026 - 03:16 nvd

HIGH 8.8

DescriptionCVE.org

A vulnerability has been found in Tenda F453 1.0.0.3. This vulnerability affects the function fromSetIpBind of the file /goform/SetIpBind. The manipulation of the argument page leads to buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.

Executive ViewAI

Why It Matters

A critical remote code execution vulnerability affects Tenda F453 routers (version 1.0.0.3) with no patch currently available, exposing organizations using this device to potential network compromise and unauthorized access. With active public exploits available, this represents an immediate threat to network integrity and data security for affected deployments.

Business Impact: Severe

Compensating Controls

Implement WAF rules to block requests to /goform/SetIpBind endpoint; segment affected routers on isolated VLANs with restricted access; disable the IP binding feature if not essential to operations; enforce strict network access controls limiting administrative functions; deploy intrusion detection signatures for known exploit patterns; monitor and log all access attempts to vulnerable endpoints; consider temporary device decommissioning until patch availability.

Threat Intelligence Overview

EPSS Score

0.1%

Top 77% 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.