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CVE PROGRAM SOURCE RECORD7.3 High

CVE-2025-5272

Memory safety bugs fixed in Firefox 139 and Thunderbird 139

Description

Memory safety bugs present in Firefox 138 and Thunderbird 138. 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 139 and Thunderbird 139.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Mozilla Firefox

  • 139 to ≤ *unaffected

Mozilla Thunderbird

  • 139 to ≤ *unaffected

References