CVE-2026-16389 Details
Description
Incorrect boundary conditions, integer overflow in the Libraries component in NSS. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
A vulnerability has been identified in the Libraries component of Network Security Services (NSS) within Mozilla products. This issue arises from incorrect boundary conditions leading to the integer overflow, which could potentially be exploited under certain circumstances.
This vulnerability has been fixed in Firefox 153. Users should update to this version to address the issue.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jul 22, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://lists.debian.org/debian-lts-announce/2026/08/msg00019.html | CVE | |
| https://bugzilla.mozilla.org/show_bug.cgi?id=2043887 | [email protected] | Permissions Required |
| https://www.mozilla.org/security/advisories/mfsa2026-68/ | [email protected] | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2026-71/ | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-190 | Integer Overflow or Wraparound | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| mozilla firefox | < 153.0.0 |
CPE
Remediation
| |
| mozilla thunderbird | < 153.0 |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Aug 10, 2026 | CVE Modified | CVE |
| Jul 24, 2026 | Initial Analysis | [email protected] |
| Jul 22, 2026 | CVE Modified | [email protected] |
| Jul 22, 2026 | CVE Modified | CISA-ADP |
| Jul 21, 2026 | New CVE Received | [email protected] |