CVE-2025-3034

HIGH

Firefox < 137.0 and Thunderbird < 137.0 - Out-of-bounds Write

Title source: llm
STIX 2.1

Description

Memory safety bugs present in Firefox 136 and Thunderbird 136. 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 137 and Thunderbird 137.

References (3)

Core 3

Scores

CVSS v3 8.1
EPSS 0.0026
EPSS Percentile 48.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-787
Status published
Products (4)
mozilla/firefox < 137.0
Mozilla/Firefox 137
mozilla/thunderbird < 137.0
Mozilla/Thunderbird 137
Published Apr 01, 2025
Tracked Since Feb 18, 2026