CVE-2024-56319Public exploitNetwork attack vector

Service interruption via unlimited User Label appends

Published Dec 18, 2024 · Updated Dec 31, 2024

Resource exhaustion in Matter through 1.4.0.0 allows remote attackers to interrupt device services through repeated User Label appends. WriteLabelList passes AppendItem requests to AppendUserLabel, which increases the list length without enforcing the ten-entry maximum. Remote attackers require network access to a Matter endpoint; repeated writes consume storage, saturate CPU, cause timeouts, and degrade unrelated commands.

CVSS severity7.5
High
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource exhaustion in Matter through 1.4.0.0 allows remote attackers to interrupt device services through repeated User Label appends. WriteLabelList passes AppendItem requests to AppendUserLabel, which increases the list length without enforcing the ten-entry maximum. Remote attackers require network access to a Matter endpoint; repeated writes consume storage, saturate CPU, cause timeouts, and degrade unrelated commands.

The record

CVE
CVE-2024-56319
Published
Dec 18, 2024
Updated
Dec 31, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-770, T1499.003
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 18, 2024CVE publishedPublication date reported by the CVE source.
  2. Dec 31, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

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.

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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 exploitPublished

Weakness, pattern, technique

CWE-770Allocation of Resources Without Limits or Throttling
T1499.003Application Exhaustion Flood

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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