CVE-2026-16389
Received Received - Intake

Integer Overflow in NSS Libraries Fixed in Firefox

Publication date: 2026-07-21

Last updated on: 2026-07-21

Assigner: Mozilla Corporation

Description
Incorrect boundary conditions, integer overflow in the Libraries component in NSS. This vulnerability was fixed in Firefox 153.

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Meta Information

Published
2026-07-21
Last Modified
2026-07-21
Generated
2026-07-21
AI Q&A
2026-07-21
EPSS Evaluated
N/A
NVD
CVE-2026-16389
EUVD
EUVD-2026-46226

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
mozilla firefox 153
mozilla firefox to 153 (exc)

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

CVE-2026-16389 is an incorrect boundary condition and integer overflow vulnerability in the Libraries component of NSS (Network Security Services). It was fixed in Firefox 153.

Impact Analysis

This vulnerability could allow attackers to execute arbitrary code or cause a denial of service by exploiting integer overflow or boundary condition issues in NSS.

Mitigation Strategies

Update Firefox to version 153 or later to address the vulnerability. Check for updates through the application's built-in update mechanism or download the latest version from Mozilla's official website.

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