CVE-2026-19033
bind9: For a secondary zone with transfers restricted by TSIG, `named` may start to serve the data provided in a zone transf...
CVE-2026-19033 is fixed in 35 products on 1 platform, first by bind9 1:9.11.3+dfsg-1ubuntu1.19+esm6, released September 16, 2026. It is not reported as exploited. Patch Radar priority: Routine.
Routine
CVSS
6.5
Medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0024
15th percentile
For a secondary zone with transfers restricted by TSIG, `named` may start to serve the data provided in a zone transfer before the final message with the TSIG signature arrives. This could allow an attacker that does not actually possess a valid TSIG signature to send unauthorized zone contents to a secondary server. Although no TSIG signature ever arrives, `named` does not rollback to the pre-transfer state. To exploit the vulnerability, the transfer must be a multi-message TCP IXFR, as described by RFC 8945. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| bind · Fedora 43 | 32:9.18.51^git20261003.d0a87358-2.fc43 | FEDORA-2026-ABA85B9A89 | Nov 7, 2026 |
| bind · amzn 2023 | 32:9.18.50-1.amzn2023.0.3 | ALAS2023-2026-3137 | Sep 28, 2026 |
| bind · opensuse-leap 16.0 | 9.20.29-160000.1.1 | OPENSUSE-SU-2026:22049-1 | Oct 7, 2026 |
| bind · sles 15.6 | 9.18.50-150600.3.35.1 | SUSE-SU-2026:4608-1 | Nov 7, 2026 |
| bind · sles 15.7 | 9.20.29-150700.3.32.2 | SUSE-SU-2026:4285-1 | Sep 22, 2026 |
| bind · sles 16.0 | 9.20.29-160000.1.1 | SUSE-SU-2026:24157-1 | Oct 7, 2026 |
| bind-chroot · Fedora 43 | 32:9.18.51^git20261003.d0a87358-2.fc43 | FEDORA-2026-ABA85B9A89 | Nov 7, 2026 |
| bind-chroot · amzn 2023 | 32:9.18.50-1.amzn2023.0.3 | ALAS2023-2026-3137 | Sep 28, 2026 |
| bind-debuginfo · Fedora 43 | 32:9.18.51^git20261003.d0a87358-2.fc43 | FEDORA-2026-ABA85B9A89 | Nov 7, 2026 |
| bind-debuginfo · amzn 2023 | 32:9.18.50-1.amzn2023.0.3 | ALAS2023-2026-3137 | Sep 28, 2026 |
| bind-debugsource · Fedora 43 | 32:9.18.51^git20261003.d0a87358-2.fc43 | FEDORA-2026-ABA85B9A89 | Nov 7, 2026 |
| bind-debugsource · amzn 2023 | 32:9.18.50-1.amzn2023.0.3 | ALAS2023-2026-3137 | Sep 28, 2026 |
| bind-devel · Fedora 43 | 32:9.18.51^git20261003.d0a87358-2.fc43 | FEDORA-2026-ABA85B9A89 | Nov 7, 2026 |
| bind-devel · amzn 2023 | 32:9.18.50-1.amzn2023.0.3 | ALAS2023-2026-3137 | Sep 28, 2026 |
| bind-dnssec-utils · Fedora 43 | 32:9.18.51^git20261003.d0a87358-2.fc43 | FEDORA-2026-ABA85B9A89 | Nov 7, 2026 |
| bind-dnssec-utils · amzn 2023 | 32:9.18.50-1.amzn2023.0.3 | ALAS2023-2026-3137 | Sep 28, 2026 |
| bind-dnssec-utils-debuginfo · Fedora 43 | 32:9.18.51^git20261003.d0a87358-2.fc43 | FEDORA-2026-ABA85B9A89 | Nov 7, 2026 |
| bind-dnssec-utils-debuginfo · amzn 2023 | 32:9.18.50-1.amzn2023.0.3 | ALAS2023-2026-3137 | Sep 28, 2026 |
| bind-doc · Fedora 43 | 32:9.18.51^git20261003.d0a87358-2.fc43 | FEDORA-2026-ABA85B9A89 | Nov 7, 2026 |
| bind-doc · amzn 2023 | 32:9.18.50-1.amzn2023.0.3 | ALAS2023-2026-3137 | Sep 28, 2026 |
| bind-dyndb-ldap · Fedora 43 | 11.11-15.fc43 | FEDORA-2026-ABA85B9A89 | Nov 7, 2026 |
| bind-dyndb-ldap-debuginfo · Fedora 43 | 11.11-15.fc43 | FEDORA-2026-ABA85B9A89 | Nov 7, 2026 |
| bind-dyndb-ldap-debugsource · Fedora 43 | 11.11-15.fc43 | FEDORA-2026-ABA85B9A89 | Nov 7, 2026 |
| bind-libs · Fedora 43 | 32:9.18.51^git20261003.d0a87358-2.fc43 | FEDORA-2026-ABA85B9A89 | Nov 7, 2026 |
| bind-libs · amzn 2023 | 32:9.18.50-1.amzn2023.0.3 | ALAS2023-2026-3137 | Sep 28, 2026 |
| bind-libs-debuginfo · Fedora 43 | 32:9.18.51^git20261003.d0a87358-2.fc43 | FEDORA-2026-ABA85B9A89 | Nov 7, 2026 |
| bind-libs-debuginfo · amzn 2023 | 32:9.18.50-1.amzn2023.0.3 | ALAS2023-2026-3137 | Sep 28, 2026 |
| bind-license · amzn 2023 | 32:9.18.50-1.amzn2023.0.3 | ALAS2023-2026-3137 | Sep 28, 2026 |
| bind-utils · Fedora 43 | 32:9.18.51^git20261003.d0a87358-2.fc43 | FEDORA-2026-ABA85B9A89 | Nov 7, 2026 |
| bind-utils · amzn 2023 | 32:9.18.50-1.amzn2023.0.3 | ALAS2023-2026-3137 | Sep 28, 2026 |
| bind-utils-debuginfo · Fedora 43 | 32:9.18.51^git20261003.d0a87358-2.fc43 | FEDORA-2026-ABA85B9A89 | Nov 7, 2026 |
| bind-utils-debuginfo · amzn 2023 | 32:9.18.50-1.amzn2023.0.3 | ALAS2023-2026-3137 | Sep 28, 2026 |
| bind9 · Debian 12.15 (bookworm) | 1:9.18.49-1~deb12u3 | DEBIAN-CVE-2026-19033 | Sep 18, 2026 |
| bind9 · Debian 13.5 (trixie) | 1:9.20.29-1~deb13u1 | DEBIAN-CVE-2026-19033 | Sep 18, 2026 |
| bind9 · Debian 14 | 1:9.20.29-1 | DEBIAN-CVE-2026-19033 | Sep 18, 2026 |
| bind9 · Ubuntu 18.04.6 LTS (bionic) | 1:9.11.3+dfsg-1ubuntu1.19+esm6 | bind9 1:9.11.3+dfsg-1ubuntu1.19+esm6 | Sep 16, 2026 |
| bind9 · Ubuntu 20.04 LTS (focal) | 1:9.18.30-0ubuntu0.20.04.2+esm3 | bind9 1:9.18.30-0ubuntu0.20.04.2+esm3 | Sep 16, 2026 |
| bind9 · Ubuntu 22.04.1 LTS (jammy) | 1:9.18.39-0ubuntu0.22.04.7 | bind9 1:9.18.39-0ubuntu0.22.04.7 | Sep 16, 2026 |
| bind9 · Ubuntu 24.04.5 LTS (noble) | 1:9.18.39-0ubuntu0.24.04.8 | bind9 1:9.18.39-0ubuntu0.24.04.8 | Sep 16, 2026 |
| bind9 · Ubuntu 26.04.1 LTS (resolute) | 1:9.20.24-1ubuntu0.4 | bind9 1:9.20.24-1ubuntu0.4 | Sep 16, 2026 |
| bind9-dnsutils · Ubuntu 20.04 LTS (focal) | 1:9.18.30-0ubuntu0.20.04.2+esm3 | bind9-dnsutils 1:9.18.30-0ubuntu0.20.04.2+esm3 | Sep 16, 2026 |
| bind9-dnsutils · Ubuntu 22.04.1 LTS (jammy) | 1:9.18.39-0ubuntu0.22.04.7 | bind9-dnsutils 1:9.18.39-0ubuntu0.22.04.7 | Sep 16, 2026 |
| bind9-dnsutils · Ubuntu 24.04.5 LTS (noble) | 1:9.18.39-0ubuntu0.24.04.8 | bind9-dnsutils 1:9.18.39-0ubuntu0.24.04.8 | Sep 16, 2026 |
| bind9-dnsutils · Ubuntu 26.04.1 LTS (resolute) | 1:9.20.24-1ubuntu0.4 | bind9-dnsutils 1:9.20.24-1ubuntu0.4 | Sep 16, 2026 |
| bind9-host · Ubuntu 18.04.6 LTS (bionic) | 1:9.11.3+dfsg-1ubuntu1.19+esm6 | bind9-host 1:9.11.3+dfsg-1ubuntu1.19+esm6 | Sep 16, 2026 |
| bind9-host · Ubuntu 20.04 LTS (focal) | 1:9.18.30-0ubuntu0.20.04.2+esm3 | bind9-host 1:9.18.30-0ubuntu0.20.04.2+esm3 | Sep 16, 2026 |
| bind9-host · Ubuntu 22.04.1 LTS (jammy) | 1:9.18.39-0ubuntu0.22.04.7 | bind9-host 1:9.18.39-0ubuntu0.22.04.7 | Sep 16, 2026 |
| bind9-host · Ubuntu 24.04.5 LTS (noble) | 1:9.18.39-0ubuntu0.24.04.8 | bind9-host 1:9.18.39-0ubuntu0.24.04.8 | Sep 16, 2026 |
| bind9-host · Ubuntu 26.04.1 LTS (resolute) | 1:9.20.24-1ubuntu0.4 | bind9-host 1:9.20.24-1ubuntu0.4 | Sep 16, 2026 |
| bind9-libs · Ubuntu 20.04 LTS (focal) | 1:9.18.30-0ubuntu0.20.04.2+esm3 | bind9-libs 1:9.18.30-0ubuntu0.20.04.2+esm3 | Sep 16, 2026 |
| bind9-libs · Ubuntu 22.04.1 LTS (jammy) | 1:9.18.39-0ubuntu0.22.04.7 | bind9-libs 1:9.18.39-0ubuntu0.22.04.7 | Sep 16, 2026 |
| bind9-libs · Ubuntu 24.04.5 LTS (noble) | 1:9.18.39-0ubuntu0.24.04.8 | bind9-libs 1:9.18.39-0ubuntu0.24.04.8 | Sep 16, 2026 |
| bind9-libs · Ubuntu 26.04.1 LTS (resolute) | 1:9.20.24-1ubuntu0.4 | bind9-libs 1:9.20.24-1ubuntu0.4 | Sep 16, 2026 |
| bind9-utils · Ubuntu 20.04 LTS (focal) | 1:9.18.30-0ubuntu0.20.04.2+esm3 | bind9-utils 1:9.18.30-0ubuntu0.20.04.2+esm3 | Sep 16, 2026 |
| bind9-utils · Ubuntu 22.04.1 LTS (jammy) | 1:9.18.39-0ubuntu0.22.04.7 | bind9-utils 1:9.18.39-0ubuntu0.22.04.7 | Sep 16, 2026 |
| bind9-utils · Ubuntu 24.04.5 LTS (noble) | 1:9.18.39-0ubuntu0.24.04.8 | bind9-utils 1:9.18.39-0ubuntu0.24.04.8 | Sep 16, 2026 |
| bind9-utils · Ubuntu 26.04.1 LTS (resolute) | 1:9.20.24-1ubuntu0.4 | bind9-utils 1:9.20.24-1ubuntu0.4 | Sep 16, 2026 |
| bind9utils · Ubuntu 18.04.6 LTS (bionic) | 1:9.11.3+dfsg-1ubuntu1.19+esm6 | bind9utils 1:9.11.3+dfsg-1ubuntu1.19+esm6 | Sep 16, 2026 |
| bind9utils · Ubuntu 20.04 LTS (focal) | 1:9.18.30-0ubuntu0.20.04.2+esm3 | bind9utils 1:9.18.30-0ubuntu0.20.04.2+esm3 | Sep 16, 2026 |
| bind9utils · Ubuntu 22.04.1 LTS (jammy) | 1:9.18.39-0ubuntu0.22.04.7 | bind9utils 1:9.18.39-0ubuntu0.22.04.7 | Sep 16, 2026 |
| bind9utils · Ubuntu 24.04.5 LTS (noble) | 1:9.18.39-0ubuntu0.24.04.8 | bind9utils 1:9.18.39-0ubuntu0.24.04.8 | Sep 16, 2026 |
| dnsutils · Ubuntu 18.04.6 LTS (bionic) | 1:9.11.3+dfsg-1ubuntu1.19+esm6 | dnsutils 1:9.11.3+dfsg-1ubuntu1.19+esm6 | Sep 16, 2026 |
| dnsutils · Ubuntu 20.04 LTS (focal) | 1:9.18.30-0ubuntu0.20.04.2+esm3 | dnsutils 1:9.18.30-0ubuntu0.20.04.2+esm3 | Sep 16, 2026 |
| dnsutils · Ubuntu 22.04.1 LTS (jammy) | 1:9.18.39-0ubuntu0.22.04.7 | dnsutils 1:9.18.39-0ubuntu0.22.04.7 | Sep 16, 2026 |
| dnsutils · Ubuntu 24.04.5 LTS (noble) | 1:9.18.39-0ubuntu0.24.04.8 | dnsutils 1:9.18.39-0ubuntu0.24.04.8 | Sep 16, 2026 |
| libbind9-160 · Ubuntu 18.04.6 LTS (bionic) | 1:9.11.3+dfsg-1ubuntu1.19+esm6 | libbind9-160 1:9.11.3+dfsg-1ubuntu1.19+esm6 | Sep 16, 2026 |
| libdns-export1100 · Ubuntu 18.04.6 LTS (bionic) | 1:9.11.3+dfsg-1ubuntu1.19+esm6 | libdns-export1100 1:9.11.3+dfsg-1ubuntu1.19+esm6 | Sep 16, 2026 |
| libdns1100 · Ubuntu 18.04.6 LTS (bionic) | 1:9.11.3+dfsg-1ubuntu1.19+esm6 | libdns1100 1:9.11.3+dfsg-1ubuntu1.19+esm6 | Sep 16, 2026 |
| libirs-export160 · Ubuntu 18.04.6 LTS (bionic) | 1:9.11.3+dfsg-1ubuntu1.19+esm6 | libirs-export160 1:9.11.3+dfsg-1ubuntu1.19+esm6 | Sep 16, 2026 |
| libirs160 · Ubuntu 18.04.6 LTS (bionic) | 1:9.11.3+dfsg-1ubuntu1.19+esm6 | libirs160 1:9.11.3+dfsg-1ubuntu1.19+esm6 | Sep 16, 2026 |
| libisc-export169 · Ubuntu 18.04.6 LTS (bionic) | 1:9.11.3+dfsg-1ubuntu1.19+esm6 | libisc-export169 1:9.11.3+dfsg-1ubuntu1.19+esm6 | Sep 16, 2026 |
| libisc169 · Ubuntu 18.04.6 LTS (bionic) | 1:9.11.3+dfsg-1ubuntu1.19+esm6 | libisc169 1:9.11.3+dfsg-1ubuntu1.19+esm6 | Sep 16, 2026 |
| libisccc-export160 · Ubuntu 18.04.6 LTS (bionic) | 1:9.11.3+dfsg-1ubuntu1.19+esm6 | libisccc-export160 1:9.11.3+dfsg-1ubuntu1.19+esm6 | Sep 16, 2026 |
| libisccc160 · Ubuntu 18.04.6 LTS (bionic) | 1:9.11.3+dfsg-1ubuntu1.19+esm6 | libisccc160 1:9.11.3+dfsg-1ubuntu1.19+esm6 | Sep 16, 2026 |
| libisccfg-export160 · Ubuntu 18.04.6 LTS (bionic) | 1:9.11.3+dfsg-1ubuntu1.19+esm6 | libisccfg-export160 1:9.11.3+dfsg-1ubuntu1.19+esm6 | Sep 16, 2026 |
| libisccfg160 · Ubuntu 18.04.6 LTS (bionic) | 1:9.11.3+dfsg-1ubuntu1.19+esm6 | libisccfg160 1:9.11.3+dfsg-1ubuntu1.19+esm6 | Sep 16, 2026 |
| liblwres160 · Ubuntu 18.04.6 LTS (bionic) | 1:9.11.3+dfsg-1ubuntu1.19+esm6 | liblwres160 1:9.11.3+dfsg-1ubuntu1.19+esm6 | Sep 16, 2026 |
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