CVE intelligence and bounded remediation

CVE-2018-19860 — Broadcom Bcm4335C0 Firmware security vulnerability

High CVSS 8.8

Broadcom firmware before summer 2014 on Nexus 5 BCM4335C0 2012-12-11, Raspberry Pi 3 BCM43438A1 2014-06-02, and unspecifed other devices does not properly restrict LMP commnds and executes certain memory contents upon receiving an LMP command, as demonstrated by executing an HCI command.

Severity
High
CVSS
8.8 (3.0)
Published
2019-06-07
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-732

Affected products

  • broadcom / bcm4335c0_firmware / 2012-12-11
  • broadcom / bcm43438a1_firmware / 2014-06-02
  • cypress / cyw20702a1kwfbg_firmware
  • cypress / cyw20702a1kwfbgt_firmware
  • cypress / cyw20702b0kwfbg_firmware
  • cypress / cyw20702b0kwfbgt_firmware

Showing 6 representative product identities from 63 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Privilege escalation and unsafe privilege management

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Map service accounts, operating-system identities, roles, capabilities, impersonation, set-user transitions, and administrative helper paths.
  • Determine whether untrusted users or lower-privilege processes can reach the affected transition or modify inputs it trusts.
  • Review file, socket, registry, device, job, container, and cloud-role permissions used before and after privilege changes.

Remediate safely

  • Apply the supported fix and redesign privileged operations as a minimal, authenticated, allowlisted interface.
  • Drop privileges before processing untrusted input, verify the drop succeeds, and remove unnecessary roles, capabilities, and write permissions.
  • Validate ownership and permissions at time of use and add explicit lower-to-higher privilege boundary tests.

Authoritative sources

Complete CVE record and remediation plan

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