{"cve":"CVE-2020-26556","nvd":{"published":"2021-05-24T18:15:07.873","modified":"2026-06-17T03:08:11.433","status":"Modified","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_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","score":7.5},"cwes":["CWE-307"],"references":["https://kb.cert.org/vuls/id/799380","https://www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/reporting-security/","https://www.kb.cert.org/vuls/id/799380","https://kb.cert.org/vuls/id/799380","https://www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/reporting-security/"],"products":["bluetooth:bluetooth_core_specification","bluetooth:mesh_profile"],"source":"nvd","synced_at":"2026-10-19T21:18:09.669877188+00:00"},"epss":{"cve":"CVE-2020-26556","score":0.00907,"percentile":0.59894,"date":"2026-11-01"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}