CVE-2024-3764Public exploitNetwork attack vector

Service interruption via undisclosed MQTT packet handling

Published Apr 14, 2024 · Updated Aug 26, 2024

Denial of service in the MQTT Packet Handler in Tuya SDK 5.0.x and earlier allows remote authenticated users to interrupt service. No public source identifies the affected function, packet field, resource, or incorrect operation performed during MQTT packet handling. Tuya disputes the flaw and states that exploitation requires either a legitimate login or prior compromise of TLS protection; the reported consequence is limited to availability.

CVSS severity2.7
Low
EPSS probability0.59%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in the MQTT Packet Handler in Tuya SDK 5.0.x and earlier allows remote authenticated users to interrupt service. No public source identifies the affected function, packet field, resource, or incorrect operation performed during MQTT packet handling. Tuya disputes the flaw and states that exploitation requires either a legitimate login or prior compromise of TLS protection; the reported consequence is limited to availability.

The record

CVE
CVE-2024-3764
Published
Apr 14, 2024
Updated
Aug 26, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-404, T1499
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 14, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 26, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

3.3VulDBAV:N/AC:L/Au:M/C:N/I:N/A:P
2.7VulDBCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L
2.7VulDBCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-404Improper Resource Shutdown or Release
T1499Endpoint Denial of Service

Public exploit references

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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