Bluetooth Firmware -broadcom- Update Version 2.2.3.593 ((hot)) May 2026

Technical Analysis and Impact Assessment of Broadcom Bluetooth Firmware Update 2.2.3.593

Abstract

This paper provides an in-depth examination of Broadcom Bluetooth firmware update version 2.2.3.593, a patch historically distributed via Windows Update and OEM support channels. While superficially a minor revision increment, this update addresses critical vulnerabilities in the Bluetooth stack, improves power management in Broadcom BCM43xx and BCM2070 series chipsets, and resolves coexistence issues with 2.4 GHz Wi-Fi radios. The paper explores the technical architecture of Broadcom Bluetooth firmware, the specific remediated vulnerabilities (including CVE-2017-0781 and Bluetooth Impersonation attacks), performance benchmarks, and deployment best practices.

Broad Device Compatibility: This update was widely deployed by manufacturers like Sony and Lenovo for their Windows 7-era laptops, including various VAIO VPCB, VPCC, and VPCE series models. bluetooth firmware -broadcom- update version 2.2.3.593

  1. Downloading an older driver package (e.g., version 1.0.0.xxx).
  2. Disabling automatic driver installation (via Group Policy or Registry).
  3. Manually installing the older driver through “Have Disk” in Device Manager.

9. References

  1. Armis, Inc. (2017). BlueBorne: Attack Vector Analysis. Armis Security Labs.
  2. Broadcom Corporation (2017). Release Notes: Bluetooth Firmware v2.2.3.593. Internal Document BRCM-BT-2017-12.
  3. CVE-2017-0781. (2017). National Vulnerability Database. NIST.
  4. CVE-2018-5383. (2018). KNOB: Key Negotiation of Bluetooth Attack. CERT/CC.
  5. Microsoft Update Catalog (2018). Broadcom – Bluetooth – 2.2.3.593. [Update ID: b2e8a3f1-4c5d-4e8f-9a2b-1c3d5e7f8a9b].
  6. Linux Kernel Mailing List (2018). [PATCH] bluetooth: btusb: Add Broadcom 2.2.3.593 firmware quirk. LKML.org.
  7. Spaulding, J. & Wang, M. (2019). Coexistence Performance of BCM43xx with 802.11ac. IEEE Trans. on Mobile Computing, 18(6), 1371-1384.

Version Details:

Issue 2: Bluetooth Mouse Lag Increases

Cause: Version 2.2.3.593 changes the polling interval to be more power-efficient, which conflicts with some older mouse firmware. Downloading an older driver package (e