CVE Database›Document archive›CVE-2021-37577

CVE-2021-37577

bluez: Bluetooth Passkey Reflection Attack in Secure Pairing

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Severity

Moderate

Red Hat Product Security

6.8

CVSS 3.1

Review impact separately from score.

Published · October 1, 2024

Updated · June 30, 2026

Description

A flaw was found in Bluetooth Core Specifications. This vulnerability allows an unauthenticated attacker to perform a man-in-the-middle attack and determine the Passkey used during pairing via reflection of crafted public keys and authentication evidence, potentially enabling the attacker to complete authenticated pairing with responding devices.

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

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 6.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L

CWE-639 · Authorization Bypass Through User-Controlled Key