CVE-2019-2087
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 libxaac, there is a possible out of bounds write due to a missing bounds check. This could lead to remote code execution with no additional execution privileges needed. User interaction is needed for exploitation. Product: AndroidVersions: Android-10Android ID: A-118149009
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 confidenceIn libxaac (an AAC audio decoder library for Android), a missing bounds check allows an out-of-bounds write during audio decoding. By crafting a malicious AAC audio file that triggers this vulnerability and getting a user to play it, an attacker could achieve remote code execution with the privileges of the media server process.
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= 10.0CVSS 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
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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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Verify Android version is 10.0Go to Settings > About Phone > Android version, or run 'getprop ro.build.version.release' via ADB shellAffected if Android version is exactly 10.0 (not 9.x, 11.x, or other versions)
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Confirm libxaac library existsCheck for the library file at /system/lib/libxaac.so or /vendor/lib/libxaac.so using 'ls -la /system/lib/libxaac.so' via ADB shellAffected if The libxaac.so file exists on the device filesystem
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Identify apps or services using libxaac for audio decodingMonitor process activity during AAC audio playback using 'adb shell ps -A | grep -E "media|mediaserver"' and check which processes access libxaacAffected if Any media application or the mediaserver process is actively decoding AAC audio files using the vulnerable library
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Check media server process privilegesRun 'adb shell ps -A | grep mediaserver' to identify the mediaserver process and its privilegesAffected if The mediaserver process is running with elevated privileges and can be targeted for RCE via crafted AAC files
A device is affected if it is running Android 10.0 and contains the libxaac library that can be invoked by media applications for decoding AAC audio files.
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-10 that includes the fix for this libxaac vulnerability. Users should ensure their devices receive the latest monthly security update.
- Consultation8.0 h
- Implementation16.0 h
- Testing12.0 h
- Review / QA8.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $12,352.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2019-2087 — 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-2019-2087 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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