CVE-2020-26557

CVSS V2 Low 2.9 CVSS V3 High 7.5
Description
Mesh Provisioning in the Bluetooth Mesh profile 1.0 and 1.0.1 may permit a nearby device (without possession of the AuthValue used in the provisioning protocol) to determine the AuthValue via a brute-force attack (unless the AuthValue is sufficiently random and changed each time).
Overview
  • CVE ID
  • CVE-2020-26557
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-05-24T18:15:07
  • Last Modified Date
  • 2022-07-12T17:42:04
Weakness Enumerations
CWE URL
CWE-287 http://cwe.mitre.org/data/definitions/287.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:bluetooth:mesh_profile:1.0.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:bluetooth:mesh_profile:1.0.1:*:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:A/AC:M/Au:N/C:P/I:N/A:N
  • Access Vector
  • ADJACENT_NETWORK
  • Access Compatibility
  • MEDIUM
  • Authentication
  • NONE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • NONE
  • Availability Impact
  • NONE
  • Base Score
  • 2.9
  • Severity
  • LOW
  • Exploitability Score
  • 5.5
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
  • Attack Vector
  • ADJACENT_NETWORK
  • Attack Compatibility
  • HIGH
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 7.5
  • Base Severity
  • HIGH
  • Exploitability Score
  • 1.6
  • Impact Score
  • 5.9
References
Reference URL Reference Tags
https://kb.cert.org/vuls/id/799380 Third Party Advisory US Government Resource
https://www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/reporting-security/ Vendor Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2020-26557
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-26557
History
Created Old Value New Value Data Type Notes
2022-05-10 16:13:42 Added to TrackCVE
2022-12-05 02:53:23 2021-05-24T18:15Z 2021-05-24T18:15:07 CVE Published Date updated
2022-12-05 02:53:23 2022-07-12T17:42:04 CVE Modified Date updated
2022-12-05 02:53:23 Analyzed Vulnerability Status updated