CVE-2026-12317

HIGH

Mozilla Firefox - Memory Safety Bug Fixed in Thunderbird 152

Title source: rule

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

Core 3

Core References

CVSS v3 7.5

EPSS 0.0029

EPSS Percentile 20.7%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

CWE

CWE-119

Status published

Products (4)

mozilla/firefox < 152.0.0

Mozilla/Firefox 152

mozilla/thunderbird < 152.0.0

Mozilla/Thunderbird 152

Published Jun 16, 2026

Tracked Since Jun 16, 2026