NSS 3.21.4 release notes


Network Security Services (NSS) 3.21.4 is a security patch release for NSS 3.21. The bug fixes in NSS 3.21.4 are described in the “Bugs Fixed” section below.

Distribution Information

The HG tag is NSS_3_21_4_RTM. NSS 3.21.4 requires NSPR 4.12 or newer.

NSS 3.21.4 source distributions are available on ftp.mozilla.org for secure HTTPS download:

New in NSS 3.21.4

No new functionality is introduced in this release.

Bugs fixed in NSS 3.21.4


The NSS development team would like to thank Ronald Crane and Vladimir Klebanov for responsibly disclosing the issues by providing advance copies of their research.


NSS 3.21.4 shared libraries are backward compatible with all older NSS 3.x shared libraries. A program linked with older NSS 3.x shared libraries will work with NSS 3.21.4 shared libraries without recompiling or relinking. Furthermore, applications that restrict their use of NSS APIs to the functions listed in NSS Public Functions will remain compatible with future versions of the NSS shared libraries.


Bugs discovered should be reported by filing a bug report with bugzilla.mozilla.org (product NSS).