Silicon Labs EFR32 Bluetooth stack denial of service when sending notifications to multiple clients
Priority LOW 29CWE-401Published · Updated
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-401.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0036 30th percentileScored 2026-11-07
Fix Fixed GSDK (silabs.com): 4.3.0
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| silabs.com | GSDK | before 4.3.0 | 4.3.0 | Patch available | CNA |
- GSDK Vendorsilabs.com Affected before 4.3.0 Fixed in 4.3.0 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:silabs:gecko_software_development_kit:*:*:*:*:*:*:*:* | before 4.3.0 | Vulnerable | silabs.com |
- cpe:2.3:a:silabs:gecko_software_development_kit:*:*:*:*:*:*:*:* Versions before 4.3.0 Vulnerable ·silabs.com
Remediation
- Fix · CNA GSDK (silabs.com) Fixed in 4.3.0
Timeline
- 2026-10-02 Threatist record created from CVE-2024-0240
- 2026-10-03 Alias added: GHSA-x2cq-7whj-pv8w
References
More silabs.com Gecko Software Development Kit vulnerabilities
- TI-2023-24288 Heap-based buffer overflow in silabs.com Gecko Platform CVSS 3.1CRITICAL 10.0
- TI-2023-14952 Memory corruption in silabs.com Gecko Platform CVSS 3.1CRITICAL 9.8
- TI-2023-12925 Memory corruption in silabs.com Gecko Platform CVSS 3.1CRITICAL 9.8
- TI-2023-12476 Heap-based buffer overflow in silabs.com Gecko Platform CVSS 3.1CRITICAL 9.8
- TI-2023-12937 Memory corruption in silabs.com Gecko Platform CVSS 3.1CRITICAL 9.8
- TI-2023-10642 Heap-based buffer overflow in silabs.com Gecko Platform CVSS 3.1CRITICAL 9.8
Sources
- CVE-2024-0240 · CVE Program
- CVE-2024-0240 · NVD
- FIRST EPSS
- GHSA-x2cq-7whj-pv8w · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences