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Nbiot Sdk CVE-2026-20419

MEDIUM
Improper Check for Unusual or Exceptional Conditions (CWE-754)
2026-02-02 security@mediatek.com
Denial Of Service Nbiot Sdk Openwrt Software Development Kit
6.5
CVSS 3.1
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CVSS VectorNVD

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

Lifecycle Timeline

2
Analysis Generated
Mar 12, 2026 - 22:01 vuln.today
CVE Published
Feb 02, 2026 - 09:15 nvd
MEDIUM 6.5

DescriptionNVD

In wlan AP/STA firmware, there is a possible system becoming irresponsive due to an uncaught exception. This could lead to remote (proximal/adjacent) denial of service with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00461663 / WCNCR00463309; Issue ID: MSV-4852.

AnalysisAI

An uncaught exception in WLAN AP/STA firmware for NBIoT SDK, OpenWrt, and related development kits enables adjacent network attackers to trigger a denial of service condition that renders the system unresponsive without requiring authentication or user interaction. The vulnerability affects multiple wireless products and has no available patch at this time, presenting a medium-severity risk in networked environments.

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RemediationAI

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

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CVE-2026-20419 vulnerability details – vuln.today
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