What is CVE-2026-53209?

CVE-2026-53209 is a security advisory published by Microsoft Security Response Center (MSRC) with Medium severity. Bluetooth: hci_sync: reject oversized Broadcast Announcement prepend

Which CVE IDs does CVE-2026-53209 cover?

CVE-2026-53209 covers the following CVE IDs: CVE-2026-53209. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-53209?

CVE-2026-53209 has a CVSS v3 base score of 7.0, published by Microsoft Security Response Center (MSRC).

CVE-2026-53209MediumCVSS 7.0

Bluetooth: hci_sync: reject oversized Broadcast Announcement prepend

Vendor

Microsoft Security Response Center (MSRC)

Published

June 30, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2026-53209 →