What is the CVSS score of CVE-2026-2137?

CVE-2026-2137 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-2026-2137?

Yes, a public proof-of-concept exploit is available for CVE-2026-2137. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2026-2137?

Within 24 hours: Inventory all Tenda TX3 devices in production and assess deployment scope; isolate affected devices from untrusted networks where possible; enable logging on affected devices. Within 7 days: Implement network segmentation to restrict access to the vulnerable /goform/SetIpMacBind endpoint; deploy WAF rules blocking suspicious requests to this function; consider disabling IP-MAC binding feature if operationally feasible. Within 30 days: Develop transition plan to replace Tenda TX3 with patched/alternative vendor solutions; establish vendor communication channel for patch availability; conduct security assessment of any systems that may have been compromised.

Tx3 Firmware CVE-2026-2137

HIGH

Buffer Overflow (CWE-119)

2026-02-08 cna@vuldb.com

Buffer Overflow Tenda Tx3 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 TX3 web interface
Exploit

Send crafted HTTP POST to /goform/SetIpMacBind
Execution

Overflow buffer in argument list parsing
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Weakness	CWE CWE-119 OWASP Top 10:2025 A06:2021 - Vulnerable and Outdated Components ASVS 5.0 V15 - Secure Coding and Architecture Bounds checking, buffer size validation MITRE ATT&CK 2 techniques across 2 tactics: Execution,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	Tenda TX3 router firmware version 16.03.13.11_multi or earlier with web management interface enabled. Attacker requires valid login credentials to access the vulnerable /goform/SetIpMacBind 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 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 TX3 firmware through version 16.03.13.11_multi allows authenticated attackers to execute arbitrary code via buffer overflow in the /goform/SetIpMacBind endpoint. Public exploit code exists for this vulnerability and no patch is currently available. This high-severity flaw requires valid credentials but can be exploited over the network without user interaction.

Earlier versions of this analysis (1)

v1 Mar 12, 2026 - 21:55 CVSS 8.8

A vulnerability has been found in Tenda TX3 up to 16.03.13.11_multi. This impacts an unknown function of the file /goform/SetIpMacBind. [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 Tx3 Firmware. A vulnerability has been found in Tenda TX3 up to 16.03.13.11_multi. This impacts an unknown function of the file /goform/SetIpMacBind. The manipulation of the argument list leads to buffer overflow. The attack can 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

Feb 11, 2026 - 18:46 vuln.today

Public exploit code

CVE Published

Feb 08, 2026 - 06:16 nvd

HIGH 8.8

DescriptionCVE.org

A vulnerability has been found in Tenda TX3 up to 16.03.13.11_multi. This impacts an unknown function of the file /goform/SetIpMacBind. The manipulation of the argument list leads to buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

Executive ViewAI

Why It Matters

A high-severity vulnerability (CVSS 8.8) affects Tenda TX3 routers up to version 16.03.13.11_multi with no available patch, creating immediate risk for organizations relying on these devices for network access control. The vulnerability could allow unauthorized attackers to manipulate IP-MAC binding configurations, potentially leading to network compromise, lateral movement, and data exfiltration. With public exploits already available, exploitation risk is elevated despite low real-world prevalence data.

Business Impact: High

Compensating Controls

Deploy Web Application Firewall (WAF) rules to block POST/GET requests to /goform/SetIpMacBind endpoint; restrict administrative access to affected devices via network segmentation and IP whitelisting; disable IP-MAC binding feature if not business-critical; implement enhanced monitoring and logging of configuration changes; isolate affected routers to trusted internal networks only; implement network access controls upstream to limit attack surface; consider temporary replacement with patched network infrastructure pending vendor patch release.

Threat Intelligence Overview

EPSS Score

0.1%

Top 73% 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.