Auth bypass in Bluetooth Core Specification
CVE-2020-26555
Bluetooth legacy BR/EDR PIN code pairing in Bluetooth Core Specification 1.0B through 5.2 may permit an unauthenticated nearby device to spoof the BD_ADDR of the peer device to complete pairing without knowledge of the PIN.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.009 (59.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 59.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/repor… (Vendor Advisory)
- kb.cert.org/vuls/id/799380 (US Government Resource, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00520.html (Third Party Advisory)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2020-26555?
- CVE-2020-26555 is a medium-severity vulnerability in Bluetooth Core Specification, classified under Incorrect Authorization. CVSS score: 5.4/10. Published 2021-05-24.
- How severe is CVE-2020-26555?
- Medium severity. CVSS v3 base score is 5.4 out of 10.
- Is CVE-2020-26555 known to be exploited?
- 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.