What is the CVSS score of CVE-2026-0408?

CVE-2026-0408 has a CVSS 3.1 base score of 8.0 (High). CVSS vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

How to fix or mitigate CVE-2026-0408?

Within 7 days: Identify all affected systems and apply vendor patches promptly. Audit authentication configurations and rotate any potentially compromised credentials.

Ex2800 Firmware CVE-2026-0408

HIGH

Improper Authentication (CWE-287)

2026-01-13 a2826606-91e7-4eb6-899e-8484bd4575d5

Path Traversal Netgear Ex2800 Firmware Ex3110 Firmware Ex5000 Firmware Ex6110 Firmware

8.0

CVSS 3.1 · NVD

View

Attack ChainAIDerived

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

Access

Connect to LAN network
Delivery

Authenticate to range extender
Exploit

Craft path traversal request
Execution

Access webproc file
Impact

Extract router credentials

Vulnerability Assessment

Weakness	CWE CWE-287 OWASP Top 10:2025 A07:2025 - Authentication Failures ASVS 5.0 V6 - Authentication Authentication mechanism validation MITRE ATT&CK 2 techniques across 2 tactics: Defense Evasion, Initial Access 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	LAN network access and valid authentication credentials to NETGEAR WiFi range extender GUI required. Attacker must be on local network and possess legitimate user account to exploit path traversal in dynamically generated webproc file.
Impact	CVSS 8.0 (HIGH). Attack vector: Adjacent Network. Complexity: Low. Privileges required: Low. User interaction: None.
Exploit ScenarioDerived	An attacker could exploit this vulnerability to compromise the affected system.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

Patch available 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

NETGEAR WiFi extenders (Ex5000, Ex6110, Ex2800, Ex3110) with improper path traversal validation allow authenticated LAN users to access the webproc configuration file and extract stored router credentials. An attacker with local network access can leverage this to obtain administrative credentials for further network compromise. A patch is available.

Earlier versions of this analysis (1)

v1 Mar 12, 2026 - 21:54 CVSS 8.0

A path traversal vulnerability in NETGEAR WiFi range extenders allows an attacker with LAN authentication to access the router's IP and review the contents of the dynamically generated webproc file, which records the username and password submitted to the router GUI. [CVSS 8.0 HIGH]

RemediationAI

A vendor patch is available — apply it immediately. Validate and sanitize file path inputs. Use allowlists.

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-287 (Improper Authentication). Affects Ex2800 Firmware. A path traversal vulnerability in NETGEAR WiFi range extenders allows an attacker with LAN authentication to access the router's IP and review the contents of the dynamically generated webproc file, which records the username and password submitted to the router GUI.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 8.0 HIGH

AV:A/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

Adjacent

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Patch released

Feb 20, 2026 - 19:41 nvd

Patch available

CVE Published

Jan 13, 2026 - 16:16 nvd

HIGH 8.0

DescriptionCVE.org

Executive ViewAI

Why It Matters

Organizations using A path traversal vulnerability in NETGEAR WiFi range extenders face notable risk from CVE-2026-0408, a improper authentication vulnerability rated CVSS 8.0. Attackers could bypass security controls to gain unauthorized access to protected resources and sensitive data. A patch is available and should be applied as part of regular vulnerability management.

Business Impact: High

Compensating Controls

Apply vendor patch. If immediate patching is not feasible: (1) Implement network-level access controls; (2) Enable MFA where possible; (3) Monitor authentication logs for anomalous access.

Threat Intelligence Overview

EPSS Score

0.1%

Top 81% exploitable

Data Quality

3 sources

Confidence: Low

NVD

CVE.org

EPSS

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 No

EPSS 0.1%

Patch available Yes

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.