CVE-2020-11831
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 · uneditedOvoiceManager has system permission to write vulnerability reports for arbitrary files, affected product is com.oppo.ovoicemanager V2.0.1.
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 confidenceOvoiceManager (com.oppo.ovoicemanager V2.0.1) running on OPPO devices has a critical vulnerability allowing arbitrary file write via system privileges. The app can write vulnerability reports to locations outside its intended scope, enabling potential privilege escalation or code execution on the affected device.
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= 2.0.1CVSS 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
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/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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Check if OvoiceManager app is installedRun 'adb shell pm list packages | grep ovoicemanager' or check device settings under Apps > All Apps for com.oppo.ovoicemanagerAffected if The package com.oppo.ovoicemanager appears in the installed packages list
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Verify the installed versionRun 'adb shell dumpsys package com.oppo.ovoicemanager' and look for versionName or versionCode in the outputAffected if The version shown is 2.0.1 (exact match)
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Confirm system app statusRun 'adb shell pm list packages -s | grep ovoicemanager' or check if the app is located in /system/priv-app/Affected if The app is installed as a system application with privileged access
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Check for vulnerability report filesLook for suspicious XML or text files in /sdcard/ or /data/ directories that may have been created by the app's reporting feature, using 'adb shell ls -la /sdcard/ | grep -i report'Affected if Unexpected report files exist outside the app's intended storage directory
You are affected if OvoiceManager version 2.0.1 is installed as a system app on your OPPO device, as this specific version contains the arbitrary file write 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 dataUpdate OvoiceManager to a patched version if available, or disable/remove the vulnerable application from affected OPPO devices to prevent exploitation of this arbitrary file write vulnerability.
- Consultation2.0 h
- Implementation1.0 h
- Testing2.0 h
- Review / QA1.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2020-11831 — 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-2020-11831 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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