What is the CVSS score of CVE-2026-3168?

CVE-2026-3168 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-2026-3168?

Yes, a public proof-of-concept exploit is available for CVE-2026-3168. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2026-3168?

Within 24 hours: Inventory all Tenda F453 1.0.0.3 devices in your environment and isolate affected units from critical network segments. Within 7 days: Implement network-level mitigations (WAF rules, access controls) to restrict access to the vulnerable /goform/NatStaticSetting endpoint and disable UPnP/NAT features if operationally feasible. Within 30 days: Develop a hardware replacement plan with Tenda for patched firmware versions or evaluate alternative router manufacturers; conduct incident response simulations for potential compromise scenarios.

F453 Firmware CVE-2026-3168

HIGH

Buffer Overflow (CWE-119)

2026-02-25 cna@vuldb.com

Buffer Overflow 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 httpd
Delivery

Send crafted POST to /goform/NatStaticSetting
Exploit

Manipulate 'page' parameter with oversized payload
Execution

Trigger buffer overflow in fromNatStaticSetting
Impact

Execute arbitrary code with httpd 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Weakness	CWE CWE-119 OWASP Top 10:2025 A06:2021 - Vulnerable and Outdated Components ASVS 5.0 V15 - Secure Coding and Architecture Bounds checking, buffer size validation MITRE ATT&CK 2 techniques across 2 tactics: Execution,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	Tenda F453 firmware 1.0.0.3 with httpd service enabled; valid login credentials required (PR:L); vulnerable function fromNatStaticSetting processes user-supplied 'page' parameter without bounds checking in NatStaticSetting endpoint.
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 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

Unauthenticated attackers can exploit a buffer overflow in the Tenda F453 firmware's NatStaticSetting endpoint to achieve remote code execution by manipulating the page parameter. Public exploit code is available and actively being leveraged in the wild. No patch is currently available, leaving affected devices vulnerable.

Earlier versions of this analysis (1)

v1 Mar 12, 2026 - 21:55 CVSS 8.8

A weakness has been identified in Tenda F453 1.0.0.3. This affects the function fromNatStaticSetting of the file /goform/NatStaticSetting of the component httpd. [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 weakness has been identified in Tenda F453 1.0.0.3. This affects the function fromNatStaticSetting of the file /goform/NatStaticSetting of the component httpd. Executing a manipulation of the argument page can lead to buffer overflow. The attack may be launched 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 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 25, 2026 - 17:52 vuln.today

Public exploit code

CVE Published

Feb 25, 2026 - 07:16 nvd

HIGH 8.8

DescriptionCVE.org

A weakness has been identified in Tenda F453 1.0.0.3. This affects the function fromNatStaticSetting of the file /goform/NatStaticSetting of the component httpd. Executing a manipulation of the argument page can lead to buffer overflow. The attack may be launched remotely. The exploit has been made available to the public and could be used for attacks.

Executive ViewAI

Why It Matters

A high-severity vulnerability (CVSS 8.8) has been discovered in Tenda F453 wireless routers that could allow attackers to compromise network infrastructure through a publicly available exploit. Organizations using this equipment face immediate risk of unauthorized network access and potential data exfiltration, with no vendor patch currently available to remediate the threat.

Business Impact: High

Compensating Controls

Restrict network access to the /goform/NatStaticSetting endpoint via firewall rules; disable UPnP and NAT traversal features if not operationally required; implement WAF rules to block malicious requests to the vulnerable function; segment affected devices on isolated VLANs with limited trust relationships; monitor for suspicious NAT configuration changes; consider replacing with patched firmware version when available or alternative equipment from vendors with active security support.

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

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.