CVE-2026-12317

HighCVSS 7.5

Published: 16/06/2026(UTC)Updated: 18/06/2026(UTC)Translated: 19/06/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Low risk

0.29%

20th percentile — higher than 20% of all known CVEs

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

Exploitation of this vulnerability could lead to unauthorized memory access, posing a risk to user data.

It is recommended to update to the latest version of Firefox and Thunderbird to mitigate this issue.

Original NVD description (English source)

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