Description
Mozilla developers reported memory safety bugs present in Firefox for Android 79. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 80, Firefox ESR < 78.2, Thunderbird < 78.2, and Firefox for Android < 80.
Affected products
mozilla: firefox; mozilla: firefox esr; mozilla: firefox mobile; mozilla: thunderbird
References10
- bugzilla.mozilla.org/buglist.cgi?bug_id=1651001%2C1653626%2C165… Broken LinkIssue TrackingVendor Advisory
- www.mozilla.org/security/advisories/mfsa2020-36/ Release NotesVendor Advisory
- www.mozilla.org/security/advisories/mfsa2020-38/ Release NotesVendor Advisory
- www.mozilla.org/security/advisories/mfsa2020-39/ Release NotesVendor Advisory
- www.mozilla.org/security/advisories/mfsa2020-41/ Release NotesVendor Advisory
- bugzilla.mozilla.org/buglist.cgi?bug_id=1651001%2C1653626%2C165… Broken LinkIssue TrackingVendor Advisory
- www.mozilla.org/security/advisories/mfsa2020-36/ Release NotesVendor Advisory
- www.mozilla.org/security/advisories/mfsa2020-38/ Release NotesVendor Advisory
- www.mozilla.org/security/advisories/mfsa2020-39/ Release NotesVendor Advisory
- www.mozilla.org/security/advisories/mfsa2020-41/ Release NotesVendor Advisory
Metrics
- CVSS 3.1
-
8.8
HIGH
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 1% percentile: 65 · as of 11 November 2026
- CWE
- CWE-362CWE-416CWE-617
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