CVE-2026-24109

CRITICAL
2026-03-02 [email protected]
9.8
CVSS 3.1
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CVSS Vector

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

Tags

Buffer Overflow W20e Firmware

Description

An issue was discovered in Tenda W20E V4.0br_V15.11.0.6. Attackers may exploit the vulnerability by controlling the value of `picName`. When this value is used in `sprintf` without validating variable sizes, it could lead to a buffer overflow vulnerability.

Analysis

Tenda W20E has a third buffer overflow in a different CGI parameter.

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Remediation

Within 24 hours: Inventory all Tenda W20E V4.0br_V15.11.0.6 devices across the organization and isolate affected units from production networks. Within 7 days: Evaluate replacement options or identify alternative network equipment; implement network segmentation to restrict device access; document all compensating controls deployed. …

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Priority Score

69
Low Medium High Critical
KEV: 0
EPSS: +0.1
CVSS: +49
POC: +20

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CVE-2026-24109 vulnerability details – vuln.today
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