CVE-2018-13903
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 · uneditedu'Error in UE due to race condition in EPCO handling' in Snapdragon Auto, Snapdragon Compute, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Wearables in APQ8053, MDM9205, MDM9206, MSM8909W, MSM8917, MSM8920, MSM8937, MSM8940, MSM8953, SDM450, SM8150
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 confidenceRace condition vulnerability in EPCO (Evolved Packet Core Object) handling within Qualcomm Snapdragon baseband/firmware. The timing flaw in EPCO processing could allow manipulation of packet core handling leading to errors in User Equipment.
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
- Network
- Complexity
- High
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/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 checksWork through these to decide whether this CVE applies to you.
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Identify the Qualcomm chipset model in the deviceCheck device specifications, system information, or baseband/modem details to determine the exact Qualcomm chipset (Apq8053, Mdm9205, Mdm9206, Msm8909w, Msm8917, Msm8920, Msm8937, or Msm8940)Affected if The chipset matches any of the following: Apq8053, Mdm9205, Mdm9206, Msm8909w, Msm8917, Msm8920, Msm8937, or Msm8940
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Confirm the chipset is a Snapdragon baseband processorVerify the identified chipset is a Qualcomm Snapdragon processor with baseband/firmware functionality used in mobile or IoT devicesAffected if The device uses a Qualcomm Snapdragon baseband processor from the affected list
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Check if EPCO (Evolved Packet Core Object) handling is in useThis is a baseband-level function in the modem processor - verify the device has an active cellular/mobile network capability that processes EPCO objectsAffected if The device has cellular connectivity and processes packet core handling through the baseband processor
If the device contains any of the listed Qualcomm chipsets (Apq8053, Mdm9205, Mdm9206, Msm8909w, Msm8917, Msm8920, Msm8937, Msm8940) with cellular baseband firmware, the device is affected since all versions of these specific firmware variants contain the race condition 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 dataFirmware update required from device OEMs/Qualcomm; no end-user mitigation available beyond patching affected devices.
- Consultation2.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $4,480.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2018-13903 — 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-2018-13903 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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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.
- 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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