CVE intelligence and bounded remediation

CVE-2018-11277 — Qualcomm Msm8909W Firmware security vulnerability

High CVSS 7.8

In Snapdragon (Automobile, Mobile, Wear) in version MSM8909W, MSM8996AU, SD 210/SD 212/SD 205, SD 430, SD 450, SD 615/16/SD 415, SD 617, SD 625, SD 650/52, SD 810, SD 820, SD 820A, SD 835, SD 845, SDA660, the com.qualcomm.embms is a vendor package deployed in the system image which has an inadequate permission level and allows any application installed from Play Store to request this permission at install-time. The system application interfaces with the Radio Interface Layer leading to potential access control issue.

Severity
High
CVSS
7.8 (3.0)
Published
2018-09-20
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-732

Affected products

  • qualcomm / msm8909w_firmware
  • qualcomm / msm8996au_firmware
  • qualcomm / sd210_firmware
  • qualcomm / sd212_firmware
  • qualcomm / sd205_firmware
  • qualcomm / sd430_firmware

Showing 6 representative product identities from 20 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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