CVE-2020-26556
HIGH
7.5
CVSS Score
Published: May 24, 2021 at 05:34 PM UTC
Updated: June 17, 2026 at 03:08 AM UTC
2 products affected across 1 vendorBluetooth Core SpecificationMesh Profile
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Severity
HIGH7.5
Exploit prediction
EPSS 0.9%
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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
1.0b ≤ v ≤ 5.2
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (3)
x_refsource_MISCThird Party AdvisoryUS Government Resource
Source: [email protected]
https://kb.cert.org/vuls/id/799380x_refsource_MISCVendor Advisory
Source: [email protected]
https://www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/reporting-security/Third Party Advisoryx_refsource_CERT-VNUS Government Resource
Source: [email protected]
https://www.kb.cert.org/vuls/id/799380CVSS
- Attack Vector
- ADJACENT_NETWORK
- Complexity
- HIGH
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-307
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