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Fencer Intel
high 7.5

CVE-2026-96888 json

Named may terminate unexpectedly when a redirect zone is used with strict QNAME minimization

published 21d ago modified 16d ago also EUVD-2026-107255

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 40%
public exploits
0
none known

Summary

A BIND resolver that is configured with both a "redirect" zone and "qname-minimization strict" may abort with an assertion failure while processing the redirect. This issue affects BIND 9 versions 9.16.0 through 9.18.50, 9.20.0 through 9.20.29, 9.21.0 through 9.21.26, 9.16.8-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.29-S1.

Patch / fix

  • isc bind 9.20.30, 9.20.30-s1, 9.21.27
  • bind9 Debian 13 1:9.20.30-1~deb13u1
  • bind9 Debian 14 1:9.20.30-1

debian advisories DEBIAN-CVE-2026-96888

  • bind9 Ubuntu 22.04 LTS 1:9.18.39-0ubuntu0.22.04.8
  • bind9 Ubuntu 24.04 LTS 1:9.18.39-0ubuntu0.24.04.9
  • bind9 Ubuntu 26.10 1:9.20.24-1ubuntu3.1
  • bind9 Ubuntu 26.04 LTS 1:9.20.24-1ubuntu0.5

ubuntu advisories UBUNTU-CVE-2026-96888

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • bind openSUSE Tumbleweed 9.20.30-1.1

opensuse advisories openSUSE-SU-2026:12231-1

  • bind AlmaLinux 9 32:9.16.23-40.el9_8.13
  • bind-libs AlmaLinux 9 32:9.16.23-40.el9_8.13
  • bind-utils AlmaLinux 9 32:9.16.23-40.el9_8.13
  • bind-chroot AlmaLinux 9 32:9.16.23-40.el9_8.13
  • bind-license AlmaLinux 9 32:9.16.23-40.el9_8.13
  • python3-bind AlmaLinux 9 32:9.16.23-40.el9_8.13
  • bind-dnssec-utils AlmaLinux 9 32:9.16.23-40.el9_8.13
  • bind9.16 AlmaLinux 8 32:9.16.23-0.22.el8_10.21

almalinux advisories ALSA-2026:93610ALSA-2026:94011ALSA-2026:93072ALSA-2026:92419

  • bind Rocky Linux 9 2:9.16.23-40.el9_8.13
  • bind9.16 Rocky Linux 8 2:9.16.23-0.22.el8_10.21
  • bind9.18 Rocky Linux 9 2:9.18.29-14.el9_8.12
  • bind Rocky Linux 10 2:9.18.33-15.el10_2.14

rocky linux advisories RLSA-2026:93610RLSA-2026:94011RLSA-2026:93072RLSA-2026:92419

  • bind Alpine 3.24, Alpine 3.23, Alpine 3.22 9.20.30-r0

alpine advisories ALPINE-CVE-2026-96888

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Is CVE-2026-96888 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-96888 updated cvss 7.5

bind: bind: Denial of Service via assertion failure during redirect processing

  • Red Hat Enterprise Linux 9 dhcp, dhcp-relay, dhcp-client, dhcp-common, dhcp-server Red Hat OpenShift Container Platform 4 openshift/ose-rhel-coreos-8 Red Hat OpenShift Container Platform 5 openshift/ose-rhel-coreos-9
    affected: no fix available
  • Red Hat CodeReady Linux Builder EUS (v.9.6) bind-libs 9.16.23-31.el9_6.5, bind9.18-libs 9.18.29-4.el9_6.5
    fixed: vendor fix RHSA-2026:95048
  • Red Hat Enterprise Linux AppStream (v. 8) bind9.16 9.16.23-0.22.el8_10.21, bind9.16-libs 9.16.23-0.22.el8_10.21, bind9.16-utils 9.16.23-0.22.el8_10.21, bind9.16-chroot 9.16.23-0.22.el8_10.21, bind9.16-license 9.16.23-0.22.el8_10.21, python3-bind9.16 9.16.23-0.22.el8_10.21, +1 more
    fixed: vendor fix RHSA-2026:94011
  • Red Hat Enterprise Linux AppStream (v. 9) bind 9.16.50-12.el9_9.1, bind 9.16.23-40.el9_8.13, bind9.18 9.18.29-29.el9_9.1, bind-libs 9.16.50-12.el9_9.1, bind9.18 9.18.29-14.el9_8.12, bind-libs 9.16.23-40.el9_8.13, +18 more
    fixed: vendor fix RHSA-2026:93610
  • Red Hat Enterprise Linux AppStream (v. 10) bind 9.18.33-30.el10_3.1, bind 9.18.33-15.el10_2.14, bind-libs 9.18.33-30.el10_3.1, bind-libs 9.18.33-15.el10_2.14, bind-utils 9.18.33-30.el10_3.1, bind-chroot 9.18.33-30.el10_3.1, +6 more
    fixed: vendor fix RHSA-2026:92419
  • Red Hat Enterprise Linux AppStream AUS (v.8.6) bind9.16 9.16.23-0.7.el8_6.12, bind9.16-libs 9.16.23-0.7.el8_6.12
    fixed: vendor fix RHSA-2026:94277
  • Red Hat Enterprise Linux AppStream E4S (v.8.8) bind9.16 9.16.23-0.14.el8_8.10, bind9.16-libs 9.16.23-0.14.el8_8.10
    fixed: vendor fix RHSA-2026:95017
  • Red Hat Enterprise Linux AppStream E4S (v.9.2) bind 9.16.23-11.el9_2.12, bind-libs 9.16.23-11.el9_2.12
    fixed: vendor fix RHSA-2026:95242
show 11 more
  • Red Hat Enterprise Linux AppStream E4S (v.9.4) bind 9.16.23-18.el9_4.13, bind-libs 9.16.23-18.el9_4.13
    fixed: vendor fix RHSA-2026:95241
  • Red Hat Enterprise Linux AppStream EUS (v. 10.0) bind 9.18.33-4.el10_0.6, bind-libs 9.18.33-4.el10_0.6
    fixed: vendor fix RHSA-2026:94115
  • Red Hat Enterprise Linux AppStream EUS (v.9.6) bind 9.16.23-31.el9_6.5, bind9.18 9.18.29-4.el9_6.5, bind-libs 9.16.23-31.el9_6.5, bind-utils 9.16.23-31.el9_6.5, bind9.18-libs 9.18.29-4.el9_6.5, bind-dnssec-utils 9.16.23-31.el9_6.5
    fixed: vendor fix RHSA-2026:95048
  • Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6) bind9.16 9.16.23-0.7.el8_6.12, bind9.16-libs 9.16.23-0.7.el8_6.12
    fixed: vendor fix RHSA-2026:94277
  • Red Hat Enterprise Linux AppStream TUS (v.8.8) bind9.16 9.16.23-0.14.el8_8.10, bind9.16-libs 9.16.23-0.14.el8_8.10
    fixed: vendor fix RHSA-2026:95017
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) bind-libs 9.16.50-12.el9_9.1, bind-libs 9.16.23-40.el9_8.13, bind9.18-libs 9.18.29-29.el9_9.1, bind9.18-libs 9.18.29-14.el9_8.12
    fixed: vendor fix RHSA-2026:93610
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) bind-doc 9.18.33-30.el10_3.1, bind-doc 9.18.33-15.el10_2.14, bind-devel 9.18.33-30.el10_3.1, bind-devel 9.18.33-15.el10_2.14, bind-debuginfo 9.18.33-30.el10_3.1, bind-debuginfo 9.18.33-15.el10_2.14, +8 more
    fixed: vendor fix RHSA-2026:92419
  • Red Hat Enterprise Linux CRB (v. 8) bind9.16-libs 9.16.23-0.22.el8_10.21
    fixed: vendor fix RHSA-2026:94011
  • Red Hat Hardened Images bind 9.20.30-0.1.hum1, bind-libs 9.20.30-0.1.hum1, bind-utils 9.20.30-0.1.hum1, bind-chroot 9.20.30-0.1.hum1, bind-dnssec-utils 9.20.30-0.1.hum1
    fixed: vendor fix RHSA-2026:87309
  • Red Hat OpenShift Container Platform 4.22 rhcos 4.22.9.8.202611032353
    fixed: vendor fix RHSA-2026:95346
  • Red Hat CodeReady Linux Builder EUS (v.9.6) bind-doc 9.16.23-31.el9_6.5, bind-devel 9.16.23-31.el9_6.5, bind9.18-doc 9.18.29-4.el9_6.5, bind9.18-devel 9.18.29-4.el9_6.5, bind-debuginfo 9.16.23-31.el9_6.5, bind-debugsource 9.16.23-31.el9_6.5, +7 more Red Hat Enterprise Linux 6 bind, bind-sdb, bind-libs, bind-utils, bind-chroot Red Hat Enterprise Linux 7 bind, bind-sdb, bind-libs, bind-utils, bind-chroot, bind-pkcs11, +6 more Red Hat Enterprise Linux 8 bind, bind-sdb, bind-libs, bind-utils, bind-chroot, bind-pkcs11, +7 more Red Hat Enterprise Linux AppStream AUS (v.8.6) bind9.16-utils 9.16.23-0.7.el8_6.12, bind9.16-chroot 9.16.23-0.7.el8_6.12, bind9.16-license 9.16.23-0.7.el8_6.12 Red Hat Enterprise Linux AppStream E4S (v.8.8) bind9.16-utils 9.16.23-0.14.el8_8.10, bind9.16-chroot 9.16.23-0.14.el8_8.10, bind9.16-license 9.16.23-0.14.el8_8.10, python3-bind9.16 9.16.23-0.14.el8_8.10, bind9.16-dnssec-utils 9.16.23-0.14.el8_8.10
    +8 more products
    Red Hat Enterprise Linux AppStream E4S (v.9.2) bind-utils 9.16.23-11.el9_2.12, bind-chroot 9.16.23-11.el9_2.12, bind-license 9.16.23-11.el9_2.12, python3-bind 9.16.23-11.el9_2.12, bind-dnssec-utils 9.16.23-11.el9_2.12 Red Hat Enterprise Linux AppStream E4S (v.9.4) bind-utils 9.16.23-18.el9_4.13, bind-chroot 9.16.23-18.el9_4.13, bind-license 9.16.23-18.el9_4.13, python3-bind 9.16.23-18.el9_4.13, bind-dnssec-utils 9.16.23-18.el9_4.13 Red Hat Enterprise Linux AppStream EUS (v. 10.0) bind-utils 9.18.33-4.el10_0.6, bind-chroot 9.18.33-4.el10_0.6, bind-license 9.18.33-4.el10_0.6, bind-dnssec-utils 9.18.33-4.el10_0.6 Red Hat Enterprise Linux AppStream EUS (v.9.6) bind-chroot 9.16.23-31.el9_6.5, bind-license 9.16.23-31.el9_6.5, python3-bind 9.16.23-31.el9_6.5, bind9.18-utils 9.18.29-4.el9_6.5, bind9.18-chroot 9.18.29-4.el9_6.5, bind9.18-dnssec-utils 9.18.29-4.el9_6.5 Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6) bind9.16-utils 9.16.23-0.7.el8_6.12, bind9.16-chroot 9.16.23-0.7.el8_6.12, bind9.16-license 9.16.23-0.7.el8_6.12 Red Hat Enterprise Linux AppStream TUS (v.8.8) bind9.16-utils 9.16.23-0.14.el8_8.10, bind9.16-chroot 9.16.23-0.14.el8_8.10, bind9.16-license 9.16.23-0.14.el8_8.10, python3-bind9.16 9.16.23-0.14.el8_8.10, bind9.16-dnssec-utils 9.16.23-0.14.el8_8.10 Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) bind-doc 9.18.33-4.el10_0.6, bind-devel 9.18.33-4.el10_0.6, bind-debuginfo 9.18.33-4.el10_0.6, bind-debugsource 9.18.33-4.el10_0.6, bind-libs-debuginfo 9.18.33-4.el10_0.6, bind-utils-debuginfo 9.18.33-4.el10_0.6, +1 more Red Hat OpenShift AI (RHOAI) rhoai/odh-training-operator-rhel9
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
21d ago

Exploit prediction

0.46% chance of exploitation in the next 30 days, higher than 40% of all scored CVEs (FIRST EPSS, 2026-11-11).

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

  • ISC BIND 9

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.