CVE-2026-24111

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 specifying the value of `userInfo`. When `userInfo` is passed into the `addAuthUser` function and processed by `sscanf` without size validation, it could lead to buffer overflow.

Analysis

Tenda W20E has a fourth buffer overflow vulnerability.

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Remediation

Within 24 hours: Identify all Tenda W20E V4.0br devices in your network inventory and isolate affected units from production traffic if business-critical. Within 7 days: Contact Tenda for patch status and timelines; implement network segmentation to restrict router management access to trusted administrative networks only. …

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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-2026-24111 vulnerability details – vuln.today
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