What’s Vulnerable › Vulnerabilities

CVE-2020-6828

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-04-24 · updated 2026-06-17
• Weakness: CWE-22

Description

A malicious Android application could craft an Intent that would have been processed by Firefox for Android and potentially result in a file overwrite in the user's profile directory. One exploitation vector for this would be to supply a user.js file providing arbitrary malicious preference values. Control of arbitrary preferences can lead to sufficient compromise such that it is generally equivalent to arbitrary code execution.<br> *Note: This issue only affects Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox ESR < 68.7.

Affected products

• Mozilla Firefox ESR: before 68.7.0 — fixed in 68.7.0

How to fix

Upgrade to a fixed version: Mozilla Firefox ESR 68.7.0. Check the vendor advisory for mitigations.

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=1617928
• https://www.mozilla.org/security/advisories/mfsa2020-13/
• https://bugzilla.mozilla.org/show_bug.cgi?id=1617928
• https://www.mozilla.org/security/advisories/mfsa2020-13/

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