CVE-2026-47773

unknowncovered by 1 sourcefirst seen 2026-09-11

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.

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Exploitation outlook

Low exploitation risk0.10% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 1% of all EPSS-scored CVEs.

Advisory coverage (1)

unknownCVE-2026-47773: ArduinoBLE enables Bluetooth Low Energy connectivity on certain Arduino models. Versions prior…nvd · 2026-09-11

External references

NVD record for CVE-2026-47773

CVE.org record

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