CVE-2024-20137Network attack vector

Remote client disconnection via uncaught WLAN exception

Published Dec 2, 2024 · Updated Dec 2, 2024

Uncaught exception handling in MediaTek WLAN drivers allows remote attackers to disconnect clients on six affected chipsets. MediaTek identifies MT6890, MT7622, MT7915, MT7916, MT7981, and MT7986, but does not disclose the exceptional input, code path, or operation that leaves the exception uncaught. No authentication or user interaction is required, and the reported consequence is limited to client disconnection and service interruption.

CVSS severity7.5
High
EPSS probability1.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uncaught exception handling in MediaTek WLAN drivers allows remote attackers to disconnect clients on six affected chipsets. MediaTek identifies MT6890, MT7622, MT7915, MT7916, MT7981, and MT7986, but does not disclose the exceptional input, code path, or operation that leaves the exception uncaught. No authentication or user interaction is required, and the reported consequence is limited to client disconnection and service interruption.

The record

CVE
CVE-2024-20137
Published
Dec 2, 2024
Updated
Dec 2, 2024
Vendor
MediaTek
Product
MT7916
Classifications
CWE-248, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 2, 2024CVE publishedPublication date reported by the CVE source.
  2. Dec 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=*

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

MediaTek · MT7916version=0 <=*
MediaTek · MT6890version=0 <=*
MediaTek · MT7915version=0 <=*
MediaTek · MT7986version=0 <=*
MediaTek · MT7981version=0 <=*
MediaTek · MT7622version=0 <=*

Published CVSS scores

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-248Uncaught Exception
T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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