CVE-2026-12298

MEDIUM

Mozilla Firefox - Memory Safety Bug Fixed in Thunderbird 152

Title source: rule
STIX 2.1

Description

Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.

References (24)

Core 24
Core References

Scores

CVSS v3 5.4
EPSS 0.0031
EPSS Percentile 22.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-125 CWE-416 CWE-787 CWE-843
Status published
Products (8)
mozilla/firefox < 152.0
mozilla/firefox 140.0 - 140.12.0
Mozilla/Firefox 140.12 - 140.*
Mozilla/Firefox 152
mozilla/thunderbird < 152.0.0
mozilla/thunderbird 140.0 - 140.12.0
Mozilla/Thunderbird 140.12 - 140.*
Mozilla/Thunderbird 152
Published Jun 16, 2026
Tracked Since Jun 16, 2026