Firefox ESR Memory Safety Bug (ESR 115.37/140.12) Fixed in 115.38/140.13
CVE-2026-16361 Published on July 21, 2026
Memory safety bugs fixed in Firefox ESR 115.38 and Firefox ESR 140.13
Memory safety bugs present in Firefox ESR 115.37 and Firefox ESR 140.12. 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 was fixed in Firefox ESR 115.38 and Firefox ESR 140.13.
Products Associated with CVE-2026-16361
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Affected Versions
Mozilla Firefox:- Version 115.38, <= 115.* is unaffected.
- Version 140.13, <= * is unaffected.