CVE-2017-17306
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 · uneditedSome Huawei Smartphones with software of VNS-L21AUTC555B141, VNS-L21C10B160, VNS-L21C66B160, VNS-L21C703B140 have an array out-of-bounds read vulnerability. Due to the lack verification of array, an attacker tricks a user into installing a malicious application, and the application can exploit the vulnerability and make attacker to read out of bounds of array and possibly cause the device abnormal.
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 confidenceThis is an array out-of-bounds read vulnerability in Huawei smartphone firmware versions VNS-L21AUTC555B141, VNS-L21C10B160, VNS-L21C66B160, and VNS-L21C703B140. The vulnerability exists due to missing array bounds checking in a software component. A malicious application tricking a user into installing it can exploit this to read memory outside intended array boundaries, potentially causing device instability or information disclosure.
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= vns-l21autc555b141= vns-l21c10b160= vns-l21c66b160= vns-l21c703b140CVSS 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
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/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 your device modelCheck the phone settings under Settings > About Phone > Model Number to confirm it is Huawei VNS-L21Affected if The device model is not VNS-L21, then this CVE does not apply
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Check your firmware versionNavigate to Settings > About Phone > Version Number and compare the displayed build number against the four affected versions: vns-l21autc555b141, vns-l21c10b160, vns-l21c66b160, or vns-l21c703b140Affected if The firmware version matches exactly one of these four versions, the device is affected
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Review installed applicationsCheck the list of installed applications in Settings > Apps. Look for any applications installed from sources other than the official Huawei AppGallery or Google Play Store, or APKs sideloaded from unknown originsAffected if Applications from untrusted or unknown sources are installed, the exploitation vector is present
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Monitor for unusual behaviorObserve the device for symptoms such as unexpected app crashes, unusual battery drain, or unexplained memory usage patterns that could indicate exploitation of the memory read vulnerabilityAffected if The device exhibits instability or unusual behavior consistent with memory corruption, further investigation is warranted
You are affected if your device is a Huawei VNS-L21 running exactly one of the four specified firmware versions and has applications installed from untrusted sources.
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 dataUsers should only install applications from trusted sources and avoid sideloading APKs from unknown origins. The vendor (Huawei) must patch the affected firmware versions by implementing proper array bounds validation in the vulnerable code path.
- Consultation3.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2017-17306 — 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-2017-17306 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
- No spam, self-promotion, credentials, or personal data