CVE-2020-26556

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

Mesh Provisioning in the Bluetooth Mesh profile 1.0 and 1.0.1 may permit a nearby device, able to conduct a successful brute-force attack on an insufficiently random AuthValue before the provisioning procedure times out, to complete authentication by leveraging Malleable Commitment.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-307

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

https://kb.cert.org/vuls/id/799380Third Party Advisory, US Government Resource
https://www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/reporting-security/Vendor Advisory
https://www.kb.cert.org/vuls/id/799380Third Party Advisory, US Government Resource
https://kb.cert.org/vuls/id/799380Third Party Advisory, US Government Resource
https://www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/reporting-security/Vendor Advisory
https://www.kb.cert.org/vuls/id/799380Third Party Advisory, US Government Resource

Timeline

Published: May 24, 2021
Last modified: Jun 17, 2026
NVD status: Modified

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