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CVE PROGRAM SOURCE RECORD9.8 Critical

CVE-2025-1020

Memory safety bugs fixed in Firefox 135 and Thunderbird 135

Description

Memory safety bugs present in Firefox 134 and Thunderbird 134. 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 135 and Thunderbird 135.

Affected products

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

Mozilla Firefox

  • 135 to ≤ *unaffected

Mozilla Thunderbird

  • 135 to ≤ *unaffected

References