Legacy pairing and secure-connections pairing authentication in Bluetooth BR/EDR Core Specification v5.2 and earlier may allow an unauthenticated user to complete authentication without pairing credentials via adjacent access. An unauthenticated, adjacent attacker could impersonate a Bluetooth BR/EDR master or slave to pair with a previously paired remote device to successfully complete the authentication procedure without knowing the link key.
CVE-2020-10135
Score 5.4 from GitHub Security Advisory published 2022-05-24. NVD baseline CVSS 5.4; sources differ by 0.0.
- Lower severity and no public exploit yet
A fix is available — apply it.
- CVSS v3
- 5.4
- EG Score
- 5.4(medium)
- EPSS
- 82.0%
- KEV
- Not listed
Published
May 19, 2020
Last Modified
November 21, 2024
References (14)
- cret@certhttp://lists.opensuse.org/opensuse-security-announce/2020-08/msg00009.html
- cret@certhttp://lists.opensuse.org/opensuse-security-announce/2020-08/msg00047.html
- cret@certhttp://packetstormsecurity.com/files/157922/Bluetooth-Impersonation-Attack-BIAS-Proof-Of-Concept.html
- cret@certhttp://seclists.org/fulldisclosure/2020/Jun/5
- cret@certhttps://francozappa.github.io/about-bias/
- cret@certhttps://kb.cert.org/vuls/id/647177/
- cret@certhttps://www.bluetooth.com/learn-about-bluetooth/bluetooth-technology/bluetooth-security/bias-vulnerability/
- af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00009.html
- af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00047.html
- af854a3a-2127-422b-91ae-364da2661108http://packetstormsecurity.com/files/157922/Bluetooth-Impersonation-Attack-BIAS-Proof-Of-Concept.html
- af854a3a-2127-422b-91ae-364da2661108http://seclists.org/fulldisclosure/2020/Jun/5
- af854a3a-2127-422b-91ae-364da2661108https://francozappa.github.io/about-bias/
- af854a3a-2127-422b-91ae-364da2661108https://kb.cert.org/vuls/id/647177/
- af854a3a-2127-422b-91ae-364da2661108https://www.bluetooth.com/learn-about-bluetooth/bluetooth-technology/bluetooth-security/bias-vulnerability/
Vendor Advisories for CVE-2020-10135(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Patch Availability(1)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| redhat | kernel-0:5.14.0-503.11.1.el9_5 | 2024-11-12 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Weakness Classification(3)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 8× in last 7d / 43× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-11 08:24 UTCEPSS rescore
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- 2026-05-27 13:39 UTCEPSS rescore
- 2026-05-27 03:30 UTCEG score recompute
- 2026-05-27 03:30 UTCVendor advisory
- 2026-05-27 03:30 UTCGHSA enrichment
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Frequently asked(5)
What is CVE-2020-10135?
When was CVE-2020-10135 disclosed?
Is CVE-2020-10135 actively exploited?
What is the CVSS score of CVE-2020-10135?
How do I remediate CVE-2020-10135?
Dependency Blast Radius
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