What’s Vulnerable › Vulnerabilities

CVE-2020-35473

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-11-08 · updated 2026-06-17
• Weakness: CWE-203

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.

Affected products

• Bluetooth Core Specification: from 4.0 through 5.2

References

• https://dl.acm.org/doi/10.1145/3548606.3559372
• https://www.sigsac.org/ccs/CCS2022/proceedings/ccs-proceedings.html
• https://dl.acm.org/doi/10.1145/3548606.3559372
• https://www.sigsac.org/ccs/CCS2022/proceedings/ccs-proceedings.html

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