CVE-2024-4013Network attack vector

Message replay via unsaved protection-list state

Published Jun 6, 2024 · Updated Aug 1, 2024

Replay-protection failure in Silicon Labs Gecko SDK 3.1.0 through 2024.06.0 allows remote attackers to replay unsaved mesh messages. The mesh_node_power_off() API powers down without copying the in-RAM Replay Protection List to nonvolatile memory, so the node loses recent sequence-number history. Exploitation requires recorded Bluetooth Mesh traffic and a node power cycle; accepted replays can repeat the original message effects.

CVSS severity5.6
Medium
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Replay-protection failure in Silicon Labs Gecko SDK 3.1.0 through 2024.06.0 allows remote attackers to replay unsaved mesh messages. The mesh_node_power_off() API powers down without copying the in-RAM Replay Protection List to nonvolatile memory, so the node loses recent sequence-number history. Exploitation requires recorded Bluetooth Mesh traffic and a node power cycle; accepted replays can repeat the original message effects.

The record

CVE
CVE-2024-4013
Published
Jun 6, 2024
Updated
Aug 1, 2024
Vendor
Sigma Designs
Product
Gecko SDK
Classifications
CWE-404, CAPEC-679, T1040
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 6, 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=3.1.0 <=2024.06.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Sigma Designs · Gecko SDKversion=3.1.0 <=2024.06.0

Published CVSS scores

5.6Silicon LabsCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-404Improper Resource Shutdown or Release
CAPEC-679Exploitation of Improperly Configured or Implemented Memory Protections
T1040Network Sniffing

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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