CVE-2020-12411

Mozilla developers reported memory safety bugs present in Firefox 76. 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 < 77.

• CWE-787

• https://bugzilla.mozilla.org/buglist.cgi?bug_id=1620972%2C1625333Issue Tracking, Permissions Required, Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2020-20/Vendor Advisory
• https://bugzilla.mozilla.org/buglist.cgi?bug_id=1620972%2C1625333Issue Tracking, Permissions Required, Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2020-20/Vendor Advisory

Published

Jul 9, 2020

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2020-12406Mozilla Developer Iain Ireland discovered a missing type che…8.8
• CVE-2020-12407Mozilla Developer Nicolas Silva found that when using WebRen…6.5
• CVE-2020-12408When browsing a document hosted on an IP address, an attacke…6.5
• CVE-2020-12409When using certain blank characters in a URL, they where inc…8.8
• CVE-2020-1241A security feature bypass vulnerability exists when Windows …7.8
• CVE-2020-12410Mozilla developers reported memory safety bugs present in Fi…8.8
• CVE-2020-12412By navigating a tab using the history API, an attacker could…4.3
• CVE-2020-12413The Raccoon attack is a timing attack on DHE ciphersuites in…5.9
• CVE-2020-12414IndexedDB should be cleared when leaving private browsing mo…6.5
• CVE-2020-12415When "%2F" was present in a manifest URL, Firefox's AppCache…6.5
• CVE-2020-12416A VideoStreamEncoder may have been freed in a race condition…8.8
• CVE-2020-12417Due to confusion about ValueTags on JavaScript Objects, an o…8.8