CVE-2026-12329 is a vulnerability in Mozilla Firefox
Published on June 16, 2026

Memory safety bug fixed in Firefox ESR 140.12
Memory safety bug fixed in Firefox ESR 140.12. This vulnerability was fixed in Firefox ESR 140.12.

NVD

Products Associated with CVE-2026-12329

Want to know whenever a new CVE is published for Mozilla Firefox? stack.watch will email you.

Mozilla Firefox

Affected Versions

Mozilla Firefox:

Version 140.12, <= * is unaffected.