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CVE-2024-0240

Silicon Labs EFR32 Bluetooth stack denial of service when sending notifications to multiple clients

MEDIUM
6.5
CVSS Score
Published: February 15, 2024 at 08:30 PM UTC
Updated: June 17, 2026 at 06:53 AM UTC
2 products affected across 2 vendorsGecko Software Development KitGecko Software Development Kit

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

A memory leak in the Silicon Labs' Bluetooth stack for EFR32 products may cause memory to be exhausted when sending notifications to multiple clients, this results in all Bluetooth operations, such as advertising and scanning, to stop.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Gecko Software Development Kit· Silabs
95%
v < 4.3.0
Affected range stops below 4.3.0, so it looks safe — our inference, not a vendor statement
Gecko Software Development Kit· Silabs Com
60%
v < 4.3.0
Affected range stops below 4.3.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (2)

Permissions Required
Source: [email protected]
https://community.silabs.com/069Vm000001AjEfIAK
Product
Source: [email protected]
https://github.com/SiliconLabs/gecko_sdk

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUMSilabs
Attack Vector
ADJACENT_NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-401

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