CVE-2020-26558
Bluetooth LE and BR/EDR secure pairing in Bluetooth Core Specification 2.1 through 5.2 may permit a nearby man-in-the-middle attacker to identify the Passkey used during pairing (in the Passkey authentication procedure) by reflection of the public key and the authentication evidence of the initiating device, potentially permitting this attacker to complete authenticated pairing with the responding device using the correct Passkey for the pairing session. The attack methodology determines the Passkey value one bit at a time.
- Score
- CVSS 3.1 4.2 Medium
- Status
- Modified - cve@mitre.org
- Published
- 2021-05-24
- Last modified
- 2025-11-04
- Weaknesses
- CWE-287
Affected products
- Bluetooth Core Specification (Bluetooth)
- Debian Linux (Debian)
- Fedora (Fedoraproject)
- Ac 1550 Firmware (Intel)
- Ac 3165 Firmware (Intel)
- Ac 3168 Firmware (Intel)
- Ac 7265 Firmware (Intel)
- Ac 8260 Firmware (Intel)
- Ac 8265 Firmware (Intel)
- Ac 9260 Firmware (Intel)
- Ac 9461 Firmware (Intel)
- Ac 9462 Firmware (Intel)
- Ac 9560 Firmware (Intel)
- Ax1650 Firmware (Intel)
- Ax1675 Firmware (Intel)
- Ax200 Firmware (Intel)
- Ax201 Firmware (Intel)
- Ax210 Firmware (Intel)
- Linux Kernel (Linux)
References
- https://kb.cert.org/vuls/id/799380
- https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html
- https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html
- https://lists.debian.org/debian-lts-announce/2021/06/msg00022.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NSS6CTGE4UGTJLCOZOASDR…
- https://security.gentoo.org/glsa/202209-16
- https://www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/reporting-security/
- https://www.debian.org/security/2021/dsa-4951
- https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00517.html
- https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00520.html
- https://www.kb.cert.org/vuls/id/799380