Memory Corruption in Firefox 154 (CVE-2026-84142)
CVE-2026-84142 Published on September 1, 2026
Internally found bugs fixed in Firefox 155
Internally found bugs present in Firefox 154. 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 155.
Products Associated with CVE-2026-84142
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Affected Versions
Mozilla Firefox:- Version 155, <= * is unaffected.