Connection update while closing connection may lead to denial-of-service
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
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-401.
Summary
A memory leak in the EFR32 Bluetooth LE stack 5.1.0 through 5.1.1 allows an attacker to send an invalid pairing message and cause future legitimate connection attempts to fail. A reset of the device immediately clears the error.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00291 21st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
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 | Bluetooth SDK | 5.0.0 – v5.1.1 | — | No fix listed | CNA |
- Bluetooth SDK Vendorsilabs.com Affected 5.0.0 – v5.1.1 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:silabs:bluetooth_low_energy_software_development_kit:*:*:*:*:*:*:*:* | 5.0.0 – 5.1.1 | Vulnerable | silabs.com |
- cpe:2.3:a:silabs:bluetooth_low_energy_software_development_kit:*:*:*:*:*:*:*:* Versions 5.0.0 – 5.1.1 Vulnerable ·silabs.com
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2023-2683
- 2026-10-03 Alias added: GHSA-xgxr-3384-47xm
References
More silabs.com Bluetooth Low Energy Software Development Kit vulnerabilities
- TI-2020-12228 Silicon Labs Bluetooth Low Energy SDK before 2.13.3 has a buffer overflow via packet data. CVSS 3.1HIGH 8.8
- TI-2020-12229 Silicon Labs Bluetooth Low Energy SDK before 2.13.3 has a buffer overflow via packet data. CVSS 3.1MEDIUM 6.5
- TI-2023-21715 Loss of confidentiality due to potential race condition in Bluetooth controller Connection_Handle reuse CVSS 3.1LOW 3.1
Sources
- CVE-2023-2683 · CVE Program
- CVE-2023-2683 · NVD
- FIRST EPSS
- GHSA-xgxr-3384-47xm · 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