| Name | CVE-2026-16389 |
| Description | Incorrect boundary conditions, integer overflow in the Libraries component in NSS. This vulnerability was fixed in Firefox 153 and Thunderbird 153. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DSA-6403-1 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| firefox (PTS) | sid | 153.0.1-1 | fixed |
| nss (PTS) | bullseye | 2:3.61-1+deb11u3 | vulnerable |
| bullseye (security) | 2:3.61-1+deb11u6 | vulnerable |
| bookworm | 2:3.87.1-1+deb12u2 | vulnerable |
| bookworm (security) | 2:3.87.1-1+deb12u3 | vulnerable |
| trixie | 2:3.110-1+deb13u3 | vulnerable |
| trixie (security) | 2:3.110-1+deb13u4 | fixed |
| forky, sid | 2:3.126-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| firefox | source | (unstable) | 153.0-1 | | | |
| nss | source | trixie | 2:3.110-1+deb13u4 | | DSA-6403-1 | |
| nss | source | (unstable) | 2:3.126-1 | | | |
Notes
https://www.mozilla.org/en-US/security/advisories/mfsa2026-68/#CVE-2026-16389
https://hg-edge.mozilla.org/projects/nss/rev/9e854d9c6234