ArduinoBLE: Memory corruption via malformed ATT write request
Priority LOW 31CWE-131Published · Updated
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- None · High · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
ArduinoBLE enables Bluetooth Low Energy connectivity on certain Arduino models. Versions prior to 2.0.2 contain a missing bounds check in the ATT layer write request handler that allows a remote, unauthenticated BLE client to corrupt memory in the ATTClass global object. Devices running ArduinoBLE with one or more characteristics configured with the BLEEncryption property are affected. The fix is included starting from the 2.0.2 release.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0015 4th percentileScored 2026-11-07
Fix Fixed ArduinoBLE (arduino-libraries): 2.0.2
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 |
|---|---|---|---|---|---|
| arduino-libraries | ArduinoBLE | before 2.0.2 | 2.0.2 | Patch available | CNA |
- ArduinoBLE Vendorarduino-libraries Affected before 2.0.2 Fixed in 2.0.2 Patch available CNA
Remediation
- Fix · CNA ArduinoBLE (arduino-libraries) Fixed in 2.0.2
Timeline
- 2026-10-02 Threatist record created from CVE-2026-47773
References
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences