W20e Firmware CVE-2026-24108
CRITICALCVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
3DescriptionNVD
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 buffer overflow — second of eight critical vulnerabilities in this router firmware.
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RemediationAI
Within 24 hours: Identify all Tenda W20E V4.0br_V15.11.0.6 devices in your network inventory and isolate affected units from production environments where possible. Within 7 days: Implement network segmentation to restrict access to these devices, disable remote management features, and establish enhanced monitoring for suspicious traffic. …
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