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W30e Firmware CVE-2026-24428

HIGH
Incorrect Authorization (CWE-863)
2026-01-26 disclosure@vulncheck.com
Authentication Bypass Tenda W30e Firmware
8.8
CVSS 3.1 · NVD
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Attack ChainAIDerived

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

  1. Access
    Authenticate as low-privileged user
  2. Delivery
    Send crafted API request to user management endpoint
  3. Exploit
    Bypass role-based access control
  4. Execution
    Change administrator password
  5. Impact
    Gain full administrative privileges

Vulnerability Assessment

Weakness
CWE
CWE-863
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Authorization logic validation
MITRE ATT&CK

1 technique across 1 tactic: Privilege Escalation

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

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Exploitation Conditions

Tenda W30E V2 firmware V16.01.0.19(5037) or earlier with low-privileged user account already created. Attacker requires valid authentication credentials for any non-admin user account on the device.
Impact

CVSS 8.8 (HIGH). Attack vector: Network. Complexity: Low. Privileges required: Low. User interaction: None. Exploitation requires authentication.
Exploit ScenarioDerived

An attacker (requires authentication) could exploit this vulnerability to compromise the affected system.
This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

Tenda W30E V2 firmware through version 16.01.0.19(5037) allows authenticated users with low privileges to escalate to administrator by exploiting broken authorization in the user management API, enabling password changes for admin accounts without proper access controls. An attacker with any valid user account can bypass web interface restrictions and gain full administrative access to the device. No patch is currently available for this vulnerability.

Earlier versions of this analysis (1)
v1 Mar 12, 2026 - 22:00 CVSS 8.8

Shenzhen Tenda W30E V2 firmware versions up to and including V16.01.0.19(5037) contain an authorization flaw in the user management API that allows a low-privileged authenticated user to change the administrator account password. [CVSS 8.8 HIGH]

RemediationAI

Monitor vendor advisories for a patch. Restrict network access to the affected service where possible.

Affects your stack

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Technical ContextAI · show details

Classified as CWE-863 (Incorrect Authorization). Affects W30E Firmware. Shenzhen Tenda W30E V2 firmware versions up to and including V16.01.0.19(5037) contain an authorization flaw in the user management API that allows a low-privileged authenticated user to change the administrator account password. By sending a crafted request directly to the backend endpoint, an attacker can bypass role-based restrictions enforced by the web interface and obtain full administrative privileges.

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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

DescriptionCVE.org

Shenzhen Tenda W30E V2 firmware versions up to and including V16.01.0.19(5037) contain an authorization flaw in the user management API that allows a low-privileged authenticated user to change the administrator account password. By sending a crafted request directly to the backend endpoint, an attacker can bypass role-based restrictions enforced by the web interface and obtain full administrative privileges.

Executive ViewAI

Why It Matters

A critical authorization flaw in Shenzhen Tenda W30E V2 routers allows any authenticated user to reset the administrator password, enabling complete network device compromise. Organizations using affected firmware versions face immediate risk of unauthorized administrative access and potential network infrastructure takeover.

Business Impact: High
Compensating Controls

Implement network access controls restricting authenticated users to read-only operations; disable user management API if not operationally required; segment affected devices to isolated VLANs with restricted administrative access; deploy network segmentation preventing lateral movement from compromised devices; monitor administrative account access logs for unauthorized changes; require multi-factor authentication for administrative functions if supported by device.

Threat Intelligence Overview

EPSS Score
0.0%
Top 85% 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 0.0%
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
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact
High

Priority Score

44
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +44
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Authentication Bypass CRITICAL

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

Affected Products (CPE)CVE.org

cpe:2.3:o:tenda:w30e_firmware:*:*:*:*:*:*:*:*

More in W30e Firmware

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CVE-2024-32286 CRITICAL POC
9.8 Apr 17

Tenda W30E v1.0 V1.0.1.25(633) firmware has a stack overflow vulnerability located via the page parameter in the fromVir
CVE-2023-49411 CRITICAL POC
9.8 Dec 07

Tenda W30E V16.01.0.12(4843) contains a stack overflow vulnerability via the function formDeleteMeshNode. Rated critical
CVE-2023-49406 CRITICAL POC
9.8 Dec 07

Tenda W30E V16.01.0.12(4843) was discovered to contain a Command Execution vulnerability via the function /goform/telnet
CVE-2023-49405 CRITICAL POC
9.8 Dec 07

Tenda W30E V16.01.0.12(4843) was discovered to contain a stack overflow via the function UploadCfg. Rated critical sever
CVE-2023-49404 CRITICAL POC
9.8 Dec 07

Tenda W30E V16.01.0.12(4843) was discovered to contain a stack overflow via the function formAdvancedSetListSet. Rated c
CVE-2023-50002 CRITICAL POC
9.8 Dec 07

Tenda W30E V16.01.0.12(4843) was discovered to contain a stack overflow via the function formRebootMeshNode. Rated criti
CVE-2023-50001 CRITICAL POC
9.8 Dec 07

Tenda W30E V16.01.0.12(4843) was discovered to contain a stack overflow via the function formUpgradeMeshOnline. Rated cr
CVE-2023-50000 CRITICAL POC
9.8 Dec 07

Tenda W30E V16.01.0.12(4843) was discovered to contain a stack overflow via the function formResetMeshNode. Rated critic
CVE-2023-49999 CRITICAL POC
9.8 Dec 07

Tenda W30E V16.01.0.12(4843) was discovered to contain a command injection vulnerability via the function setUmountUSBPa
CVE-2023-49410 CRITICAL POC
9.8 Dec 07

Tenda W30E V16.01.0.12(4843) was discovered to contain a stack overflow via the function via the function set_wan_status
CVE-2023-49403 CRITICAL POC
9.8 Dec 07

Tenda W30E V16.01.0.12(4843) was discovered to contain a command injection vulnerability via the function setFixTools. R
CVE-2023-49402 CRITICAL POC
9.8 Dec 07

Tenda W30E V16.01.0.12(4843) was discovered to contain a stack overflow via the function localMsg. Rated critical severi

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References

Advisories & patches
REF https://www.tendacn.com/product/W30E REF https://www.vulncheck.com/advisories/tenda-w30e-v2-incorrect-authorization-allows-administrator-password-change

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