CVE-2018-13927
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 · uneditedDebug policy with invalid signature can be loaded when the debug policy functionality is disabled by using the parallel image loading in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer Electronics Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Wired Infrastructure and Networking in MDM9206, MDM9607, MDM9650, MDM9655, MSM8996AU, QCS404, QCS605, SD 410/12, SD 636, SD 712 / SD 710 / SD 670, SD 820, SD 820A, SD 835, SD 845 / SD 850, SD 855, SD 8CX, SDA660, SDM630, SDM660, SXR1130
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 · moderate confidenceA debug policy with an invalid cryptographic signature can be loaded via parallel image loading even when the debug policy functionality is explicitly disabled in affected Snapdragon chipset firmware.
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 dataall versionsall versionsall versionsall versionsall versionsall versionsall versionsall versionsCVSS 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
- Local
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.0/AV:L/AC:L/PR:L/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 checksWork through these to decide whether this CVE applies to you.
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Identify the chipset modelDetermine the specific Qualcomm chipset present in the device (e.g., through /proc/cpuinfo, device documentation, or AT commands for modems)Affected if The chipset is one of: Mdm9206, Mdm9607, Mdm9650, Mdm9655, Msm8996au, Qcs404, Qcs605, or Sd 410
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Check firmware versionRetrieve the installed firmware version via vendor-specific diagnostic tools, bootloader information, or modem AT command interfaces (e.g., AT+CGMR)Affected if Any firmware version is installed on an affected chipset listed above (all versions are vulnerable)
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Verify debug policy configurationInspect the debug policy settings in the firmware configuration files or via secure boot debug policy indicatorsAffected if Debug policy functionality is present in the firmware regardless of whether it is explicitly disabled (the flaw allows loading even when disabled)
If the device contains any of the listed Qualcomm chipsets (Mdm9206, Mdm9607, Mdm9650, Mdm9655, Msm8996au, Qcs404, Qcs605, or Sd 410) with any firmware version, the environment is affected by this vulnerability.
Generated from the published advisory. Verify against your own configuration.
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 dataThis firmware-level vulnerability requires a patch from Qualcomm and OEM/device manufacturers. Users should apply vendor-provided firmware updates and monitor for security advisories from their device manufacturers.
- Consultation8.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2018-13927 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2018-13927 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- 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
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