CVE intelligence and bounded remediation

CVE-2018-5839 — Qualcomm Snapdragon Auto Firmware security vulnerability

High CVSS 7.1

Improperly configured memory protection allows read/write access to modem image from HLOS kernel in Snapdragon Auto, Snapdragon Compute, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile in versions MDM9150, MDM9615, MDM9625, MDM9635M, MDM9640, MDM9650, MDM9655, MSM8996AU, QCS605, SD 636, SD 675, SD 712 / SD 710 / SD 670, SD 820, SD 820A, SD 835, SD 845 / SD 850, SD 855, SD 8CX, SDA660, SDM630, SDM660, SDX20, SXR1130.

Severity
High
CVSS
7.1 (3.0)
Published
2019-02-25
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-269

Affected products

  • qualcomm / snapdragon_auto_firmware
  • qualcomm / snapdragon_compute_firmware
  • qualcomm / snapdragon_consumer_internet_of_things_firmware
  • qualcomm / snapdragon_industrial_internet_of_things_firmware
  • qualcomm / mdm9150_firmware
  • qualcomm / mdm9615_firmware

Showing 6 representative product identities from 30 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Privilege escalation and unsafe privilege management

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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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