CVE-2020-10135

Name: CVE-2020-10135
Creator: NVD / NIST
Published: 2020-05-19T16:15:11.073+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 2.39%

Last modified Jun 17, 2026

CVE-2020-10135 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. 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.. EPSS estimates a 2.39% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

5.4/10

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

EPSS Probability

2.39%

81.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Bluetooth	Bluetooth Core	<= 5.2
Opensuse	Leap	15.1

References

http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00009.htmlBroken Link, Mailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00047.htmlBroken Link, Mailing List, Third Party Advisory
http://packetstormsecurity.com/files/157922/Bluetooth-Impersonation-Attack-BIAS-Proof-Of-Concept.htmlThird Party Advisory, VDB Entry
http://seclists.org/fulldisclosure/2020/Jun/5Exploit, Mailing List, Third Party Advisory
https://francozappa.github.io/about-bias/Third Party Advisory
https://kb.cert.org/vuls/id/647177/Third Party Advisory, US Government Resource
https://www.bluetooth.com/learn-about-bluetooth/bluetooth-technology/bluetooth-security/bias-vulnerability/Vendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00009.htmlBroken Link, Mailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00047.htmlBroken Link, Mailing List, Third Party Advisory
http://packetstormsecurity.com/files/157922/Bluetooth-Impersonation-Attack-BIAS-Proof-Of-Concept.htmlThird Party Advisory, VDB Entry
http://seclists.org/fulldisclosure/2020/Jun/5Exploit, Mailing List, Third Party Advisory
https://francozappa.github.io/about-bias/Third Party Advisory
https://kb.cert.org/vuls/id/647177/Third Party Advisory, US Government Resource
https://www.bluetooth.com/learn-about-bluetooth/bluetooth-technology/bluetooth-security/bias-vulnerability/Vendor Advisory

Timeline

Published: May 19, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-10135?

How severe is CVE-2020-10135?

CVE-2020-10135 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 2.39% probability of exploitation in the next 30 days.

How do I fix CVE-2020-10135?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-10135?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST