CVE-2020-6826

Mozilla developers Tyson Smith, Bob Clary, and Alexandru Michis reported memory safety bugs present in Firefox 74. 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 < 75.

• CWE-787

• https://bugzilla.mozilla.org/buglist.cgi?bug_id=1613009%2C1613195%2C1616734%2C1617488%2C1619229%2C1620719%2C1624897Issue Tracking, Permissions Required
• https://www.mozilla.org/security/advisories/mfsa2020-12/Vendor Advisory
• https://bugzilla.mozilla.org/buglist.cgi?bug_id=1613009%2C1613195%2C1616734%2C1617488%2C1619229%2C1620719%2C1624897Issue Tracking, Permissions Required
• https://www.mozilla.org/security/advisories/mfsa2020-12/Vendor Advisory

Published

Apr 24, 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.
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• CVE-2020-6820Under certain conditions, when handling a ReadableStream, a …8.1
• CVE-2020-6821When reading from areas partially or fully outside the sourc…7.5
• CVE-2020-6822On 32-bit builds, an out of bounds write could have occurred…8.8
• CVE-2020-6823A malicious extension could have called <code>browser.identi…9.8
• CVE-2020-6824Initially, a user opens a Private Browsing Window and genera…2.8
• CVE-2020-6825Mozilla developers and community members Tyson Smith and Chr…9.8
• CVE-2020-6827When following a link that opened an intent://-schemed URL, …4.7
• CVE-2020-6828A malicious Android application could craft an Intent that w…7.5
• CVE-2020-6829When performing EC scalar point multiplication, the wNAF poi…5.3
• CVE-2020-6830For native-to-JS bridging, the app requires a unique token t…7.5
• CVE-2020-6831A buffer overflow could occur when parsing and validating SC…9.8
• CVE-2020-6832An issue was discovered in GitLab Enterprise Edition (EE) 8.…5.3