THREATPORT/VULNERABILITY/CVE-2020-15802
MEDIUM SEVERITY

CVE-2020-15802

Bluetooth Core Specification vulnerability

CVSS
5.9
EPSS
7.1%
EPSS pct
94th
Exploited
No known
Devices supporting Bluetooth before 5.1 may allow man-in-the-middle attacks, aka BLURtooth. Cross Transport Key Derivation in Bluetooth Core Specification v4.2 and v5.0 may permit an unauthenticated user to establish a bonding with one transport, either LE or BR/EDR, and replace a bonding already established on the opposing transport, BR/EDR or LE, potentially overwriting an authenticated key with an unauthenticated key, or a key with greater entropy with one with less.
Affected vendor
Bluetooth
Affected product
Bluetooth Core Specification
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Weakness type (CWE)
  • CWE-287 — Improper Authentication
Published
2020-09-11

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, high attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to integrity.

Its EPSS score of 7.1% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 94% of all scored CVEs.

Check your external exposure to CVE-2020-15802

  • Confirm whether Bluetooth Bluetooth Core Specification is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2020-15802.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2020-15802

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2020-15802 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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