Firefox EsrWeb browser · Mozilla
CVE-2020-15650
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 · uneditedGiven an installed malicious file picker application, an attacker was able to overwrite local files and thus overwrite Firefox settings (but not access the previous profile). *Note: This issue only affected Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox ESR < 68.11.
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 file picker vulnerability in Firefox for Android allows a malicious file picker application to overwrite local files and Firefox settings. The attacker cannot access previous profile data. This is a local file overwrite issue affecting only Firefox for Android before version 68.11.
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
Firefox EsrWeb browser
< 68.11CVSS 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
- High
- Availability
- None
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/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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Confirm Firefox for Android is installedCheck the installed applications on the Android device for Mozilla Firefox. On Android, you can inspect the package details via Settings > Apps > Mozilla Firefox, or use the command 'adb shell pm list packages | grep mozilla' to list Mozilla-related packages.Affected if Firefox for Android package is present on the device
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Check Firefox for Android versionNavigate to Settings > Apps > Mozilla Firefox > App info, or use 'adb shell dumpsys package org.mozilla.firefox' to display the installed version. Compare the version number to the affected range (below 68.11).Affected if The installed version is less than 68.11
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Identify installed file picker applicationsReview installed applications on the device for any third-party file manager or file picker apps. On Android, use 'adb shell pm list packages' to list all installed packages, then cross-reference against known file picker applications.Affected if Any third-party file picker or file manager applications are installed alongside Firefox for Android
The environment is affected if Firefox for Android version below 68.11 is installed on the device alongside third-party file picker applications that could exploit the local file overwrite 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 data68.11
Update Firefox for Android to version 68.11 or later to remediate this vulnerability. Ensure only trusted file picker applications are installed on devices running Firefox for Android.
Fix this in Firefox Esr
Scoped from the published advisory
- Consultation1.0 h
- Implementation2.0 h
- Testing1.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-15650 — 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-2020-15650 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
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