CVE-2020-35473

Name: CVE-2020-35473
Creator: NVD / NIST
Published: 2022-11-08T06:15:09.403+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 0.34%

Last modified Jun 17, 2026

CVE-2020-35473 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. An information leakage vulnerability in the Bluetooth Low Energy advertisement scan response in Bluetooth Core Specifications 4.0 through 5.2, and extended scan response in Bluetooth Core Specifications 5.0 through 5.2, may be used to identify devices using Resolvable Private Addressing (RPA) by their response or non-response to specific scan requests from remote addresses. RPAs that have been associated with a specific remote device may also be used to identify a peer in the same manner by using its reaction to an active scan request. EPSS estimates a 0.34% chance of exploitation in the next 30 days.

Description

An information leakage vulnerability in the Bluetooth Low Energy advertisement scan response in Bluetooth Core Specifications 4.0 through 5.2, and extended scan response in Bluetooth Core Specifications 5.0 through 5.2, may be used to identify devices using Resolvable Private Addressing (RPA) by their response or non-response to specific scan requests from remote addresses. RPAs that have been associated with a specific remote device may also be used to identify a peer in the same manner by using its reaction to an active scan request. This has also been called an allowlist-based side channel.

Metrics

CVSS 3.1

4.3/10

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

EPSS Probability

0.34%

25.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Bluetooth	Bluetooth Core Specification	>= 4.0, <= 5.2

References

https://dl.acm.org/doi/10.1145/3548606.3559372Technical Description, Third Party Advisory
https://www.sigsac.org/ccs/CCS2022/proceedings/ccs-proceedings.htmlTechnical Description, Third Party Advisory
https://dl.acm.org/doi/10.1145/3548606.3559372Technical Description, Third Party Advisory
https://www.sigsac.org/ccs/CCS2022/proceedings/ccs-proceedings.htmlTechnical Description, Third Party Advisory

Timeline

Published: Nov 8, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-35473?

How severe is CVE-2020-35473?

CVE-2020-35473 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.34% probability of exploitation in the next 30 days.

How do I fix CVE-2020-35473?

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-2020-35473?

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

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Source: NVD / NIST