CVE-2017-11121: On Broadcom BCM4355C0 Wi-Fi chips 9.44.78.27.0.1.56 and other chips, properly crafted malicious over-the-ai...

Security readout for executives and security teams

This CVE describes a Wi-Fi firmware flaw in Broadcom chips where malicious nearby wireless Fast Transition frames could crash or disrupt affected devices, with possible additional effects. The source bundle does not provide CVSS, a complete product list, or confirmed exploitation, so urgency depends on whether managed devices include affected Broadcom Wi-Fi firmware. Exposure is most likely on mobile or embedded devices using affected Broadcom Wi-Fi chips and firmware, especially devices covered by the cited Android and Apple 2017 advisories. The bundle does not identify a complete affected-product matrix. Treat this as an exposure-verification and patch-management item, not an emergency based on the provided evidence. Priority rises for unmanaged mobile fleets, high-travel staff, or devices frequently using public or hostile Wi-Fi. Mitigation focus: Check Android, Apple, and device-vendor advisories for applicable patched firmware or OS updates.; Prioritize updates for mobile fleets using Broadcom Wi-Fi hardware.; Inventory devices for Broadcom BCM4355C0 or vendor advisories referencing CVE-2017-11121..

Prepared

Jun 12, 2026, 20:56 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.