CVE-2021-23988

Mozilla developers reported memory safety bugs present in Firefox 86. 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 < 87.

• CWE-787

• https://bugzilla.mozilla.org/buglist.cgi?bug_id=1684994%2C1686653Issue Tracking, Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2021-10/Vendor Advisory
• https://bugzilla.mozilla.org/buglist.cgi?bug_id=1684994%2C1686653Issue Tracking, Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2021-10/Vendor Advisory

Published

Mar 31, 2021

Last Modified

Jun 17, 2026

Status

Modified

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