CVE-2020-6800

Mozilla developers and community members reported memory safety bugs present in Firefox 72 and Firefox ESR 68.4. 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. In general, these flaws cannot be exploited through email in the Thunderbird product because scripting is disabled when reading mail, but are potentially risks in browser or browser-like contexts. This vulnerability affects Thunderbird < 68.5, Firefox < 73, and Firefox < ESR68.5.

• CWE-787

• https://bugzilla.mozilla.org/buglist.cgi?bug_id=1595786%2C1596706%2C1598543%2C1604851%2C1608580%2C1608785%2C1605777Broken Link, Issue Tracking
• https://security.gentoo.org/glsa/202003-02Third Party Advisory
• https://security.gentoo.org/glsa/202003-10Third Party Advisory
• https://usn.ubuntu.com/4278-2/Third Party Advisory
• https://usn.ubuntu.com/4328-1/Third Party Advisory
• https://usn.ubuntu.com/4335-1/Third Party Advisory
• https://www.mozilla.org/security/advisories/mfsa2020-05/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2020-06/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2020-07/Vendor Advisory
• https://bugzilla.mozilla.org/buglist.cgi?bug_id=1595786%2C1596706%2C1598543%2C1604851%2C1608580%2C1608785%2C1605777Broken Link, Issue Tracking
• https://security.gentoo.org/glsa/202003-02Third Party Advisory
• https://security.gentoo.org/glsa/202003-10Third Party Advisory
• https://usn.ubuntu.com/4278-2/Third Party Advisory
• https://usn.ubuntu.com/4328-1/Third Party Advisory
• https://usn.ubuntu.com/4335-1/Third Party Advisory
• https://www.mozilla.org/security/advisories/mfsa2020-05/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2020-06/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2020-07/Vendor Advisory

Published

Mar 2, 2020

Last Modified

Jun 17, 2026

Status

Modified

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