CVE-2021-1683
Windows Bluetooth Security Feature Bypass Vulnerability
- Published
- Updated
- Reserved
- Assigned by
- microsoft
Description
Microsoft is aware of the "Impersonation in the Passkey Entry Protocol" vulnerability. For more information regarding the vulnerability, please see this statement from the Bluetooth SIG. To address the vulnerability, Microsoft has released a software update that will fail attempts to pair if the remote device exchanges a public key with the same X coordinate as the locally exchanged public key
Timeline
ID reserved
By microsoft
- 41 days later
· 41 days later
Published
- 4 years later
· 4 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| microsoftCNA (assigner) | 3.1 | Medium5.0 | CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C |
| NVDNVD · Modified | 3.1 | Medium5.0 | CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N |
- EPSS (exploitation in 30 days)
- 1.7% · top 23% of all CVEs (7 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.0.
Weakness
- Security Feature Bypass
Affected products
Microsoft · Windows 10 Version 20H2
- affected 10.0.0 – < publication
Microsoft · Windows Server version 20H2
- affected 10.0.0 – < publication
Microsoft · Windows 10 Version 1803
- affected 10.0.0 – < publication
Microsoft · Windows 10 Version 1809
- affected 10.0.0 – < publication
Microsoft · Windows Server 2019
- affected 10.0.0 – < publication
Microsoft · Windows Server 2019 (Server Core installation)
- affected 10.0.0 – < publication
Microsoft · Windows 10 Version 1909
- affected 10.0.0 – < publication
Microsoft · Windows Server, version 1909 (Server Core installation)
- affected 10.0.0 – < publication
Microsoft · Windows 10 Version 2004
- affected 10.0.0 – < publication
Microsoft · Windows Server version 2004
- affected 10.0.0 – < publication
Microsoft · Windows 10 Version 1507
- affected 10.0.0 – < publication
Microsoft · Windows 10 Version 1607
- affected 10.0.0 – < publication
Microsoft · Windows Server 2016
- affected 10.0.0 – < publication
Microsoft · Windows Server 2016 (Server Core installation)
- affected 10.0.0 – < publication
- affected 6.3.0 – < publication
Microsoft · Windows Server 2012 R2
- affected 6.3.0 – < publication
Microsoft · Windows Server 2012 R2 (Server Core installation)
- affected 6.3.0 – < publication
References (2)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2021-1683)Record last updated .