What’s Vulnerable › Vulnerabilities

CVE-2020-26964

• Severity: medium (CVSS 6.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-12-09 · updated 2026-08-19

Description

If the Remote Debugging via USB feature was enabled in Firefox for Android on an Android version prior to Android 6.0, untrusted apps could have connected to the feature and operated with the privileges of the browser to read and interact with web content. The feature was implemented as a unix domain socket, protected by the Android SELinux policy; however, SELinux was not enforced for versions prior to 6.0. This was fixed by removing the Remote Debugging via USB feature from affected devices. *Note: This issue only affected Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox < 83.

Affected products

• Mozilla Firefox for Android: before 83.0 — fixed in 83.0

How to fix

Upgrade to a fixed version: Mozilla Firefox for Android 83.0. Check the vendor advisory for mitigations.

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=1658865
• https://www.mozilla.org/security/advisories/mfsa2020-50/
• https://bugzilla.mozilla.org/show_bug.cgi?id=1658865
• https://www.mozilla.org/security/advisories/mfsa2020-50/

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