CVE-2021-37577
bluez: Bluetooth Passkey Reflection Attack in Secure Pairing
Severity
ModerateRed Hat Product Security
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 · 6.8CVSS: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