Memory corruption bugs in Firefox 153
CVE-2026-74989 Published on August 18, 2026
Internally found bugs fixed in Firefox 154
Internally found bugs present in Firefox 153. Some of these bugs showed evidence of memory corruption or another security-relevant defect and we presume that with enough effort some of these could have been exploited. This vulnerability was fixed in Firefox 154.
Products Associated with CVE-2026-74989
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Affected Versions
Mozilla Firefox:- Version 154, <= * is unaffected.