CVE-2024-6352

Device crash via malformed APS packet

Published Jan 13, 2025 · Updated Aug 27, 2025

Buffer overflow in Ember ZNet's APS layer in Silicon Labs Simplicity SDK 2024.6.2 and earlier allows physically proximate attackers to crash devices. APS packet handling copies malformed packet data without adequately checking its size against the destination buffer, causing an overflow that reaches an assertion. Reachability requires radio proximity to an affected Zigbee device, and the documented consequence is an assertion-triggered service interruption.

CVSS severity4.3
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in Ember ZNet's APS layer in Silicon Labs Simplicity SDK 2024.6.2 and earlier allows physically proximate attackers to crash devices. APS packet handling copies malformed packet data without adequately checking its size against the destination buffer, causing an overflow that reaches an assertion. Reachability requires radio proximity to an affected Zigbee device, and the documented consequence is an assertion-triggered service interruption.

The record

CVE
CVE-2024-6352
Published
Jan 13, 2025
Updated
Aug 27, 2025
Vendor
Silicon Laboratories
Product
Simplicity SDK
Classifications
CWE-120, CAPEC-100, T1499
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 13, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 27, 2025Record 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 <=2024.6.2

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Silicon Laboratories · Simplicity SDKversion=0 <=2024.6.2

Published CVSS scores

4.3Silicon LabsCVSS:3.1/AV:A/AC:L/PR:N/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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CAPEC-100Overflow Buffers
T1499Endpoint Denial of Service

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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