{"cve":"CVE-2020-26557","nvd":{"published":"2021-05-24T18:15:07.903","modified":"2026-06-17T03:08:11.567","status":"Modified","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).","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-287"],"references":["https://kb.cert.org/vuls/id/799380","https://www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/reporting-security/","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"],"products":["bluetooth:mesh_profile"],"source":"nvd","synced_at":"2026-10-19T21:18:09.669877188+00:00"},"epss":{"cve":"CVE-2020-26557","score":0.00828,"percentile":0.57509,"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."]}