Moz NSS: Boundary Condition Flaw in Libraries Component
CVE-2026-12318 Published on June 16, 2026
Incorrect boundary conditions in the Libraries component in NSS
Incorrect boundary conditions in the Libraries component in NSS. This vulnerability was fixed in Firefox 152 and Thunderbird 152.
Vulnerability Analysis
CVE-2026-12318 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be low. considered to have a small impact on confidentiality and integrity and availability.
Weakness Type
What is a Buffer Overflow Vulnerability?
The software performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer.
CVE-2026-12318 has been classified to as a Buffer Overflow vulnerability or weakness.
Products Associated with CVE-2026-12318
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Affected Versions
Mozilla Firefox:- Version 152, <= * is unaffected.
- Version 152, <= * is unaffected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.