CVE Database›CVE-2020-26558

CVE-2020-26558

bluez: Passkey Entry protocol of the Bluetooth Core is vulnerable to an impersonation attack

Loading…

Severity

Moderate

Red Hat Product Security

4.2

CVSS 3.1

Review impact separately from score.

Published · May 25, 2021

Updated · November 21, 2025

Description

A vulnerability was found in the bluez, where Passkey Entry protocol used in Secure Simple Pairing (SSP), Secure Connections (SC) and LE Secure Connections (LESC) of the Bluetooth Core Specification is vulnerable to an impersonation attack where an active attacker can impersonate the initiating device without any previous knowledge.

Statement

Red Hat Product Security is aware of this issue and is currently assessing the impact on Red Hat supported products. Corresponding entry in the Red Hat CVE database (https://access.redhat.com/security/security-updates/#/cve) will be updated with latest information as the assessment progresses.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

CVSS / CWE

CVSS 3.1 · 4.2
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

CVSS 3.1 · 4.6
CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

CWE-287 · Improper Authentication