CVE-2026-19662

EUVD-2026-80743

16.09.2026, 14:17

An attacker may be able to cause a `named` resolver to abort. The attack requires inducing the victim resolver to send multiple queries for a DNSSEC-signed zone hosted by an authoritative server under the control of the attacker. If the auth responds with a particular sequence of crafted answers, and those answers arrive in a particular order with particular timing, the `named` resolver will encounter a use-after-free bug, and abort.
This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
isc	CNA	5.9 MEDIUM	NETWORK	HIGH	NONE	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Base Score

CVSS 3.x

EPSS Score

Percentile: 40.23%

Early Detection

Affected products identified ahead of NVD analysis through intelligence sources (CNA/ADP records, vendor advisories, Enginsight analysis).

Vendor	Product	Version	Source
isc	bind	9.11.0 ≤ 𝑥 ≤ 9.18.50	CNA
isc	bind	9.20.0 ≤ 𝑥 ≤ 9.20.27	CNA

Debian Releases

Debian Product

Codename

bind9

bookworm	vulnerable
bookworm (security)	1:9.18.49-1~deb12u3 fixed
forky	1:9.20.30-1 fixed
sid	1:9.20.30-1 fixed
trixie	vulnerable
trixie (security)	1:9.20.30-1~deb13u1 fixed

Ubuntu Releases

Ubuntu Product

Codename

bind9

bionic	not-affected
focal	Fixed in 1:9.18.30-0ubuntu0.20.04.2+esm3 released
jammy	Fixed in 1:9.18.39-0ubuntu0.22.04.7 released
noble	Fixed in 1:9.18.39-0ubuntu0.24.04.8 released
resolute	Fixed in 1:9.20.24-1ubuntu0.4 released
stonking	needed
trusty	not-affected
xenial	not-affected

isc-dhcp

bionic	needs-triage
focal	not-affected
jammy	not-affected
noble	needs-triage
resolute	needs-triage
stonking	dne
trusty	not-affected
xenial	not-affected

bind9-libs

focal	needs-triage
jammy	needs-triage
noble	dne
resolute	dne
stonking	dne

openSUSE / SLES Releases

openSUSE Product

Release

bind

suse enterprise sap 12 SP5	9.11.22-3.77.1 fixed
suse enterprise sap 15 SP4	9.16.50-150400.5.70.1 fixed
suse enterprise sap 15 SP5	9.16.50-150500.8.46.1 fixed
suse enterprise sap 15 SP6	9.18.50-150600.3.35.1 fixed
suse enterprise sap 15 SP7	9.20.29-150700.3.32.2 fixed
suse enterprise server 12 SP5	9.11.22-3.77.1 fixed
suse enterprise server 15 SP4	9.16.50-150400.5.70.1 fixed
suse enterprise server 15 SP5	9.16.50-150500.8.46.1 fixed
suse enterprise server 15 SP6	9.18.50-150600.3.35.1 fixed
suse enterprise server 15 SP7	9.20.29-150700.3.32.2 fixed

bind-chrootenv

suse enterprise sap 12 SP5	9.11.22-3.77.1 fixed
suse enterprise server 12 SP5	9.11.22-3.77.1 fixed

bind-devel

suse enterprise sap 12 SP5	9.11.22-3.77.1 fixed
suse enterprise server 12 SP5	9.11.22-3.77.1 fixed

bind-doc

suse enterprise sap 12 SP5	9.11.22-3.77.1 fixed
suse enterprise sap 15 SP4	9.16.50-150400.5.70.1 fixed
suse enterprise sap 15 SP5	9.16.50-150500.8.46.1 fixed
suse enterprise sap 15 SP6	9.18.50-150600.3.35.1 fixed
suse enterprise sap 15 SP7	9.20.29-150700.3.32.2 fixed
suse enterprise server 12 SP5	9.11.22-3.77.1 fixed
suse enterprise server 15 SP4	9.16.50-150400.5.70.1 fixed
suse enterprise server 15 SP5	9.16.50-150500.8.46.1 fixed
suse enterprise server 15 SP6	9.18.50-150600.3.35.1 fixed
suse enterprise server 15 SP7	9.20.29-150700.3.32.2 fixed

bind-utils

suse enterprise sap 12 SP5	9.11.22-3.77.1 fixed
suse enterprise sap 15 SP4	9.16.50-150400.5.70.1 fixed
suse enterprise sap 15 SP5	9.16.50-150500.8.46.1 fixed
suse enterprise sap 15 SP6	9.18.50-150600.3.35.1 fixed
suse enterprise server 12 SP5	9.11.22-3.77.1 fixed
suse enterprise server 15 SP4	9.16.50-150400.5.70.1 fixed
suse enterprise server 15 SP5	9.16.50-150500.8.46.1 fixed
suse enterprise server 15 SP6	9.18.50-150600.3.35.1 fixed

libbind9-161

suse enterprise sap 12 SP5	9.11.22-3.77.1 fixed
suse enterprise server 12 SP5	9.11.22-3.77.1 fixed

libdns1110

suse enterprise sap 12 SP5	9.11.22-3.77.1 fixed
suse enterprise server 12 SP5	9.11.22-3.77.1 fixed

libirs161

suse enterprise sap 12 SP5	9.11.22-3.77.1 fixed
suse enterprise server 12 SP5	9.11.22-3.77.1 fixed

libisc1107

suse enterprise sap 12 SP5	9.11.22-3.77.1 fixed
suse enterprise server 12 SP5	9.11.22-3.77.1 fixed

libisc1107-32bit

suse enterprise sap 12 SP5	9.11.22-3.77.1 fixed
suse enterprise server 12 SP5	9.11.22-3.77.1 fixed

libisccc161

suse enterprise sap 12 SP5	9.11.22-3.77.1 fixed
suse enterprise server 12 SP5	9.11.22-3.77.1 fixed

libisccfg163

suse enterprise sap 12 SP5	9.11.22-3.77.1 fixed
suse enterprise server 12 SP5	9.11.22-3.77.1 fixed

liblwres161

suse enterprise sap 12 SP5	9.11.22-3.77.1 fixed
suse enterprise server 12 SP5	9.11.22-3.77.1 fixed

python-bind

suse enterprise sap 12 SP5	9.11.22-3.77.1 fixed
suse enterprise server 12 SP5	9.11.22-3.77.1 fixed

python3-bind

suse enterprise sap 15 SP4	9.16.50-150400.5.70.1 fixed
suse enterprise sap 15 SP5	9.16.50-150500.8.46.1 fixed
suse enterprise server 15 SP4	9.16.50-150400.5.70.1 fixed
suse enterprise server 15 SP5	9.16.50-150500.8.46.1 fixed

Red Hat Enterprise Linux Releases

Red Hat Product

Release

bind

RHEL 9

32:9.16.23-40.el9_8.12

fixed

bind-chroot

RHEL 9

32:9.16.23-40.el9_8.12

fixed

bind-devel

RHEL 9

32:9.16.23-40.el9_8.12

fixed

bind-dnssec-doc

RHEL 9

32:9.16.23-40.el9_8.12

fixed

bind-dnssec-utils

RHEL 9

32:9.16.23-40.el9_8.12

fixed

bind-doc

RHEL 9

32:9.16.23-40.el9_8.12

fixed

bind-libs

RHEL 9

32:9.16.23-40.el9_8.12

fixed

bind-license

RHEL 9

32:9.16.23-40.el9_8.12

fixed

bind-utils

RHEL 9

32:9.16.23-40.el9_8.12

fixed

bind9.18

RHEL 9

32:9.18.29-14.el9_8.11

fixed

bind9.18-chroot

RHEL 9

32:9.18.29-14.el9_8.11

fixed

bind9.18-devel

RHEL 9

32:9.18.29-14.el9_8.11

fixed

bind9.18-dnssec-utils

RHEL 9

32:9.18.29-14.el9_8.11

fixed

bind9.18-doc

RHEL 9

32:9.18.29-14.el9_8.11

fixed

bind9.18-libs

RHEL 9

32:9.18.29-14.el9_8.11

fixed

bind9.18-utils

RHEL 9

32:9.18.29-14.el9_8.11

fixed

python3-bind

RHEL 9

32:9.16.23-40.el9_8.12

fixed

Amazon Linux Releases

Amazon Package

Release

bind

Amazon Linux 2	32:9.11.4-26.P2.amzn2.13.18 fixed
Amazon Linux 2023	32:9.18.50-1.amzn2023.0.3 fixed

bind-chroot

Amazon Linux 2	32:9.11.4-26.P2.amzn2.13.18 fixed
Amazon Linux 2023	32:9.18.50-1.amzn2023.0.3 fixed

bind-debuginfo

Amazon Linux 2	32:9.11.4-26.P2.amzn2.13.18 fixed
Amazon Linux 2023	32:9.18.50-1.amzn2023.0.3 fixed

bind-debugsource

Amazon Linux 2023

32:9.18.50-1.amzn2023.0.3

fixed

bind-devel

Amazon Linux 2	32:9.11.4-26.P2.amzn2.13.18 fixed
Amazon Linux 2023	32:9.18.50-1.amzn2023.0.3 fixed

bind-dnssec-utils

Amazon Linux 2023

32:9.18.50-1.amzn2023.0.3

fixed

bind-dnssec-utils-debuginfo

Amazon Linux 2023

32:9.18.50-1.amzn2023.0.3

fixed

bind-doc

Amazon Linux 2023

32:9.18.50-1.amzn2023.0.3

fixed

bind-export-devel

Amazon Linux 2

32:9.11.4-26.P2.amzn2.13.18

fixed

bind-export-libs

Amazon Linux 2

32:9.11.4-26.P2.amzn2.13.18

fixed

bind-libs

Amazon Linux 2	32:9.11.4-26.P2.amzn2.13.18 fixed
Amazon Linux 2023	32:9.18.50-1.amzn2023.0.3 fixed

bind-libs-debuginfo

Amazon Linux 2023

32:9.18.50-1.amzn2023.0.3

fixed

bind-libs-lite

Amazon Linux 2

32:9.11.4-26.P2.amzn2.13.18

fixed

bind-license

Amazon Linux 2	32:9.11.4-26.P2.amzn2.13.18 fixed
Amazon Linux 2023	32:9.18.50-1.amzn2023.0.3 fixed

bind-lite-devel

Amazon Linux 2

32:9.11.4-26.P2.amzn2.13.18

fixed

bind-pkcs11

Amazon Linux 2

32:9.11.4-26.P2.amzn2.13.18

fixed

bind-pkcs11-devel

Amazon Linux 2

32:9.11.4-26.P2.amzn2.13.18

fixed

bind-pkcs11-libs

Amazon Linux 2

32:9.11.4-26.P2.amzn2.13.18

fixed

bind-pkcs11-utils

Amazon Linux 2

32:9.11.4-26.P2.amzn2.13.18

fixed

bind-sdb

Amazon Linux 2

32:9.11.4-26.P2.amzn2.13.18

fixed

bind-sdb-chroot

Amazon Linux 2

32:9.11.4-26.P2.amzn2.13.18

fixed

bind-utils

Amazon Linux 2	32:9.11.4-26.P2.amzn2.13.18 fixed
Amazon Linux 2023	32:9.18.50-1.amzn2023.0.3 fixed

bind-utils-debuginfo

Amazon Linux 2023

32:9.18.50-1.amzn2023.0.3

fixed

Azure Linux Releases

Azure Package

Release

bind

Azure Linux 3.0

0:9.20.30-1.azl3

fixed

Common Weakness Enumeration

CWE-416 - Use After Free
Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.

Vulnerability Media Exposure

[GERMAN] Internet Systems Consortium BIND: Mehrere Schwachstellen
Ein entfernter Angreifer kann mehrere Schwachstellen in Internet Systems Consortium BIND ausnutzen, um Daten zu manipulieren, Sicherheitsmaßnahmen zu umgehen oder Denial-of-Service-Zustände herbeizuführen.
Published: 2026-09-16T22:00:00+00:00

References

https://downloads.isc.org/isc/bind9/9.20.29

https://kb.isc.org/docs/cve-2026-19662