dbcve.org
Firefox EsrWeb browser · Mozilla

CVE-2020-15649

MEDIUM · 5.5 CVSS v3.1 Published 2020-08-10
Fix available
A fix is available. Upgrade to 68.11 or later.
See remediation →
58/100
Remediation priority · Elevated
No privileges

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 · unedited
Given an installed malicious file picker application, an attacker was able to steal and upload local files of their choosing, regardless of the actually files picked. *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 confidence

This is a file disclosure vulnerability in Firefox for Android where a malicious file picker application can intercept file selection operations and steal arbitrary local files from the device, regardless of what file the user actually selected. The vulnerability stems from insufficient validation of the file picker intent on Android.

MitigationUpdate Firefox for Android to version 68.11 or later. Users should also be cautious about installing untrusted file picker applications on their devices.

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
Affected:< 68.11

CVSS 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
High
Integrity
None
Availability
None

CVSS:3.1/AV:L/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 checks

Work through these to decide whether this CVE applies to you.

  1. Verify Firefox for Android is installed
    Open the device settings, go to Apps, and look for Mozilla Firefox in the installed applications list
    Affected if Firefox for Android is present on the device
  2. Determine the installed Firefox version
    Open the Google Play Store app, search for Mozilla Firefox, tap on it, and view the version information under the app description. Alternatively, open Firefox, go to Settings > Help > About Firefox to see the version number
    Affected if Unable to determine the version - further investigation may be required
  3. Compare version against the affected range
    Check the version number found in the previous step. The affected versions are any Firefox for Android ESR versions below 68.11
    Affected if The installed version is below 68.11 (for example, 68.10, 68.9, 68.0, etc.)

A user is affected if Firefox for Android ESR version 68.11 or later is not installed on their device.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 data
Upgrade available Upgrade to 68.11 or later
Fixed in 68.11
Interim mitigation

Update Firefox for Android to version 68.11 or later. Users should also be cautious about installing untrusted file picker applications on their devices.

Fix this in Firefox Esr Scoped from the published advisory
  • Consultation1.0 h
  • Implementation1.0 h
  • Testing1.0 h
  • Review / QA1.0 h
4.0 hours of engineering $750
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,200.

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2020-15649 in production — separate from our analysis above.

No notes yet

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What this is

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.

What belongs here
  • 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
  • No spam, self-promotion, credentials, or personal data