CVE-2018-9565
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 · uneditedIn readBytes of xltdecwbxml.c, there is a possible out of bounds read due to an integer overflow. This could lead to remote information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation. Product: Android. Versions: Android-9. Android ID: A-16680558.
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 confidenceA vulnerability in the readBytes function of xltdecwbxml.c in Android-9 allows an integer overflow to cause an out-of-bounds read, leading to remote information disclosure without requiring user interaction or elevated privileges. The issue stems from insufficient bounds checking when processing WBXML (Wireless Binary XML) data.
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= 9.0CVSS 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
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
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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Verify Android version is 9.0On the Android device, go to Settings > About Phone > Android version, or run 'getprop ro.build.version.release' via ADB shellAffected if The device is running Android 9.0 (exact version match)
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Confirm WBXML decoder component is presentCheck for the presence of libxlt or wbxml-related libraries on the device. Run 'find /system -name "*xlt*" -o -name "*wbxml*"' via ADB shellAffected if WBXML decoding libraries (libxlt, libwbxml, or similar) are installed on the device
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Identify processes using WBXML functionalityMonitor network traffic or application logs for WBXML content processing. Use 'ps -A | grep -i <app_name>' to identify apps handling WBXML dataAffected if Applications are processing WBXML (Wireless Binary XML) data on the device
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Check if vulnerable xltdecwbxml component is loadedRun 'cat /proc/modules' or check /system/lib for libxlt shared objects. Also check 'dumpsys meminfo' for processes with WBXML-related memory allocationsAffected if The xltdecwbxml library is loaded into memory or present in the system libraries
A device is affected if it runs Android 9.0 and has the WBXML decoder component (xltdecwbxml/libxlt) present and actively processing WBXML data.
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 dataApply the Android security patch for Android-9 that addresses this vulnerability in the WBXML decoder component. As this is a framework-level fix, organizations should ensure all affected Android devices receive the latest security updates.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 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 $3,088.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2018-9565 — 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-2018-9565 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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