CVE-2020-0270
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 tremolo, there is a possible out of bounds read due to a missing bounds check. This could lead to remote information disclosure with no additional execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-11Android ID: A-145790628
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 the tremolo library (used for vorbis audio decoding in Android), an out-of-bounds read vulnerability exists due to a missing bounds check. An attacker could exploit this by providing a specially crafted audio file that triggers the vulnerability during decoding, potentially exposing sensitive memory contents. User interaction is required, such as playing a malicious audio file.
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= 11.0CVSS 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
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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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Identify Android versionRun 'getprop ro.build.version.release' or check Settings > About Phone > Android version to confirm the installed Android versionAffected if The device is running Android 11.0 specifically (version 11.0, not 10 or 12)
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Confirm vorbis audio support is presentCheck if any applications on the device can decode vorbis audio files (common in media players, ringtone apps, or audio messaging apps). Search for apps that handle .ogg audio files or look for 'vorbis' in installed packages via 'pm list packages | grep -i vorbis'Affected if Any vorbis-capable audio application is installed and could be used to play a malicious audio file
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Locate tremolo librarySearch for the tremolo library file on the system: 'find / -name "libtremor*" 2>/dev/null' or 'find / -name "*tremolo*" 2>/dev/null' in a rooted shell, or check /system/lib/ and /vendor/lib/ directoriesAffected if The tremolo or vorbis decoding library (libtremor.so, libvorbis.so, or similar) is present on the device
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Verify audio file processing capabilityCheck if any apps have permission to open or process audio files from untrusted sources (check app permissions for storage or media access). Attempt to play a test vorbis (.ogg) file using the device's default media playerAffected if The device can process vorbis audio files from external or untrusted sources without additional verification
The device is affected if it runs Android 11.0 and has any application capable of decoding vorbis audio files, which could be triggered by playing a specially crafted malicious audio file.
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 vendor patch for CVE-2020-0270 to the tremolo library in Android 11. Until then, exercise caution with untrusted audio sources and verify audio files before processing.
- Consultation2.0 h
- Implementation4.0 h
- Testing6.0 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 $3,808.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-0270 — 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-2020-0270 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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