CVE-2021-37577
mediumpriority · track · 0EPSS 0.002 · 15 %ileDEEUEPSS · scored 2026-10-22
Bluetooth LE and BR/EDR Secure Connections pairing and Secure Simple Pairing using the Passkey entry protocol in Bluetooth Core Specifications 2.1 through 5.3 may permit an unauthenticated man-in-the-middle attacker to identify the Passkey used during pairing by reflection of a crafted public key with the same X coordinate as the offered public key and by reflection of 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. This is a related issue to CVE-2020-26558.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (8)
Products and version ranges known to be affected.
advisories (1)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2025-0325Intel PROSet Wireless WiFi Software: Mehrere SchwachstellenDeutsch2025-02-11csaf · cert_bundDE
Ein Angreifer aus einem benachbarten Netzwerk oder ein lokaler Angreifer kann mehrere Schwachstellen in der Intel PROSet Wireless WiFi Software ausnutzen, um beliebigen Code auszuführen, erhöhte Rechte zu erlangen, vertrauliche Informationen preiszugeben oder einen Denial of Service Zustand zu erzeugen.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (11)
External citations — patches, advisories, analysis.
- https://bluetooth.comcnnvd
- https://cxsecurity.com/cveshow/CVE-2021-37577/cnnvd
- https://vigilance.fr/vulnerability/Bluetooth-spoofing-via-Passkey-Entry-Protocol-45199cnnvd
- https://www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/passkey-impersonation/cnnvd
- https://www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/reporting-security/cnnvd
- https://bluetooth.comenisa_euvd
- https://www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/passkey-impersonation/enisa_euvd
- https://www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/reporting-security/enisa_euvd
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