Firefox 154/153.1 memcorr flaw (CVE-2026-84144)
CVE-2026-84144 Published on September 1, 2026
Internally found bugs fixed in Firefox 155 and Firefox ESR 153.2
Internally found bugs present in Firefox 154 and Firefox ESR 153.1. 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 and Firefox ESR 153.2.
Products Associated with CVE-2026-84144
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Affected Versions
Mozilla Firefox:- Version 153.2, <= 153.* is unaffected.
- Version 155, <= * is unaffected.