| Name | CVE-2026-10723 |
| Description | BIND may accept incorrect child-zone NSEC3 records as valid, which could allow an attacker to forge authenticated NXDOMAIN responses. This issue affects BIND 9 versions 9.18.0 through 9.18.50, 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.24-S1. |
| 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 | DLA-4725-1, DSA-6395-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| bind9 (PTS) | bullseye | 1:9.16.50-1~deb11u2 | vulnerable |
| bullseye (security) | 1:9.16.50-1~deb11u6 | fixed | |
| bookworm | 1:9.18.49-1~deb12u1 | vulnerable | |
| bookworm (security) | 1:9.18.49-1~deb12u2 | fixed | |
| trixie | 1:9.20.23-1~deb13u1 | vulnerable | |
| trixie (security) | 1:9.20.26-1~deb13u1 | fixed | |
| forky, sid | 1:9.20.26-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| bind9 | source | bullseye | 1:9.16.50-1~deb11u6 | DLA-4725-1 | ||
| bind9 | source | bookworm | 1:9.18.49-1~deb12u2 | DLA-4725-1 | ||
| bind9 | source | trixie | 1:9.20.26-1~deb13u1 | DSA-6395-1 | ||
| bind9 | source | (unstable) | 1:9.20.26-1 |
https://kb.isc.org/docs/cve-2026-10723
https://gitlab.isc.org/isc-projects/bind9/-/commit/238ec379e9bed56383ba2333e711e554b139ac13 (9.16-branch)
https://gitlab.isc.org/isc-projects/bind9/-/commit/dc3f52388427f4f94087d984d5a2088b925810e2 (9.18-branch)
https://gitlab.isc.org/isc-projects/bind9/-/commit/c9cb6a5e24e43489cf3fd4d4cc2193b6a74499cb (9.18-branch)
https://gitlab.isc.org/isc-projects/bind9/-/commit/35e3d49d2222c13786a06021c7ed583d2a656e51 (9.18-branch)
https://gitlab.isc.org/isc-projects/bind9/-/commit/833dd3b230b92596074e8da15b12298f46c939f2 (9.18-branch)