CVE-2024-3297

Device lock-up via replayed CASE Sigma1 messages

Published Jul 24, 2024 · Updated Aug 1, 2024

Denial of service in Connectivity Standards Alliance Matter before 1.1 allows attackers on an adjacent network to make devices unresponsive. The public advisory identifies replayed, manipulated Sigma1 session-establishment messages but does not disclose the CASE state-handling error that causes the lock-up. No authentication or user interaction is required, but network adjacency is required, and recovery requires a device power cycle.

CVSS severity6.5
Medium
EPSS probability0.15%
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 Connectivity Standards Alliance Matter before 1.1 allows attackers on an adjacent network to make devices unresponsive. The public advisory identifies replayed, manipulated Sigma1 session-establishment messages but does not disclose the CASE state-handling error that causes the lock-up. No authentication or user interaction is required, but network adjacency is required, and recovery requires a device power cycle.

The record

CVE
CVE-2024-3297
Published
Jul 24, 2024
Updated
Aug 1, 2024
Vendor
Connectivity Standards Alliance
Product
Matter
Classifications
CWE-400, CAPEC-125, T1499.004
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 24, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 1, 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 <1.1

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Connectivity Standards Alliance · Matterversion=0 <1.1

Published CVSS scores

6.5BitdefenderCVSS:3.1/AV:A/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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-400Uncontrolled Resource Consumption
CAPEC-125Flooding
T1499.004Application 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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