High severity · published May 24, 2021
CVE-2020-26556
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…
7.5
CVSS
0.9%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Adjacent
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 60% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BC
Bluetooth Core Specification · Bluetooth
1.0b through 5.2 · source: NVD
MP
Mesh Profile · Bluetooth
1.0.0; 1.0.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-26556
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-26556
Third Party Advisory
https://kb.cert.org/vuls/id/799380
Vendor Advisory
https://www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/reporting-security/
Third Party Advisory
https://www.kb.cert.org/vuls/id/799380
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