Vulnerability in Bluetooth Core Specification
CVE-2020-35473
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (26.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 27th percentile — 26.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- dl.acm.org/doi/10.1145/3548606.3559372 (Technical Description, Third Party Advisory)
- www.sigsac.org/ccs/CCS2022/proceedings/ccs-proceedings.html (Technical Description, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-35473?
- CVE-2020-35473 is a medium-severity vulnerability in Bluetooth Core Specification, classified under Observable Discrepancy. CVSS score: 4.3/10. Published 2022-11-08.
- How severe is CVE-2020-35473?
- Medium severity. CVSS v3 base score is 4.3 out of 10.
- Is CVE-2020-35473 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.