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W20e Firmware CVE-2026-24113

CRITICAL
Classic Buffer Overflow (CWE-120)
2026-03-02 cve@mitre.org
Buffer Overflow W20e Firmware
9.8
CVSS 3.1
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CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

3
Analysis Generated
Mar 12, 2026 - 21:55 vuln.today
PoC Detected
Mar 05, 2026 - 16:16 vuln.today
Public exploit code
CVE Published
Mar 02, 2026 - 15:16 nvd
CRITICAL 9.8

DescriptionNVD

An issue was discovered in Tenda W20E V4.0br_V15.11.0.6. Attackers may exploit the vulnerability by controlling the value of nptr. When this value is passed into the getMibPrefix function and concatenated using sprintf without proper size validation, it could lead to a buffer overflow vulnerability.

AnalysisAI

Tenda W20E has a fifth buffer overflow.

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RemediationAI

Within 24 hours: Inventory all Tenda W20E V4.0br_V15.11.0.6 devices across the organization and isolate affected units from critical networks if possible. Within 7 days: Implement network segmentation to restrict router administrative access and monitor for exploitation attempts; contact Tenda for patch timeline estimates. …

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CVE-2026-24113 vulnerability details – vuln.today
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