Boundary Condition Flaw in NSS Libraries of Mozilla Firefox
CVE-2026-12318

Currently unrated

Key Information:

Vendor: Mozilla
Status: Firefox
Vendor: CVE Published:; 16 June 2026

What is CVE-2026-12318?

A vulnerability exists in the Libraries component of the NSS (Network Security Services) within Mozilla Firefox due to incorrect boundary conditions. This issue may lead to unexpected behavior or potential exploitation. It has been addressed in Firefox version 152, enhancing the security of the affected libraries.

Affected Version(s)

Firefox 152

References

https://bugzilla.mozilla.org/show_bug.cgi?id=2023478

https://www.mozilla.org/security/advisories/mfsa2026-57/

Download the Critical Vulnerability Management Cheat Sheet

Timeline

Vulnerability published
Jun 16, 2026
Vulnerability Reserved
Jun 15, 2026

Credit

Haruto Kimura

CVE-2026-12318 Data

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