Mdm9635m FirmwareOperating system · Qualcomm

CVE-2016-10433

HIGH · 8.1 CVSS v3.0 Published 2018-04-18
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
90/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
In Android before 2018-04-05 or earlier security patch level on Qualcomm Snapdragon Automobile, Snapdragon Mobile, and Snapdragon Wear MDM9635M, MDM9640, MDM9645, MSM8909W, SD 210/SD 212/SD 205, SD 400, SD 410/12, SD 425, SD 430, SD 450, SD 615/16/SD 415, SD 617, SD 625, SD 650/52, SD 800, SD 808, SD 820, and SD 820A, TOCTOU vulnerability during SSD image decryption may cause memory corruption.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

TOCTOU (Time-Of-Check-Time-Of-Use) vulnerability in the SSD image decryption process on Qualcomm Snapdragon chipsets (MDM9635M through SD 820A). The vulnerability exists in the race condition window between verifying SSD image integrity and actually using the decrypted image, potentially allowing memory corruption during the decryption process.

MitigationApply the April 2018 or later Android security patch level, which contains the fix for this vulnerability. For embedded/IoT devices, obtain and apply the vendor-specific firmware update from the device manufacturer that addresses this Qualcomm chipset vulnerability.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Mdm9635m FirmwareOperating system
Affected:all versions
Mdm9640 FirmwareOperating system
Affected:all versions
Mdm9645 FirmwareOperating system
Affected:all versions
Msm8909w FirmwareOperating system
Affected:all versions
Sd 210 FirmwareOperating system
Affected:all versions
Sd 212 FirmwareOperating system
Affected:all versions
Sd 205 FirmwareOperating system
Affected:all versions
Sd 400 FirmwareOperating system
Affected:all versions

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify the Qualcomm chipset model
    Check the device specifications, system information, or boot logs for the chipset identifier (e.g., MDM9635M, MDM9640, MDM9645, MSM8909W, SD210, SD212, SD205, SD400)
    Affected if The chipset matches any of the following: MDM9635M, MDM9640, MDM9645, MSM8909W, SD210, SD212, SD205, or SD400
  2. Verify the firmware version
    Query the device firmware or boot logs for the specific firmware version string associated with the identified chipset
    Affected if The firmware version is present (all versions of the affected chipsets are vulnerable)
  3. Confirm SSD image decryption is in use
    Inspect system or kernel logs for SSD image decryption operations, or check if the device performs encrypted SSD image loading during boot
    Affected if The device performs SSD image decryption operations during the boot process
  4. Check the Android security patch level
    On Android devices, go to Settings > About Phone > Security Patch Level, or run 'getprop ro.build.version.security_patch'
    Affected if The security patch level is earlier than April 2018 (devices with earlier patches are likely vulnerable)

The device is affected if it uses one of the listed Qualcomm chipsets (MDM9635M, MDM9640, MDM9645, MSM8909W, SD210, SD212, SD205, SD400) and has a security patch level earlier than April 2018.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Apply the April 2018 or later Android security patch level, which contains the fix for this vulnerability. For embedded/IoT devices, obtain and apply the vendor-specific firmware update from the device manufacturer that addresses this Qualcomm chipset vulnerability.

Fix this in Mdm9635m Firmware Scoped from the published advisory
  • Consultation8.0 h
  • Implementation16.0 h
  • Testing12.0 h
  • Review / QA4.0 h
40.0 hours of engineering $7,000
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Scan for this in your stack

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2016-10433 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data