CVE-2026-1519
CVE-2026-1519 · Excessive NSEC3 iterations cause high CPU load during insecure delegation validation
Esta página presenta datos de fuentes públicas de vulnerabilidades. Consulta el aviso original antes de actualizar.
Esta página muestra una selección de datos de las fuentes. Consulte los avisos enlazados para ver la descripción completa y las versiones afectadas.
If a BIND resolver is performing DNSSEC validation and encounters a maliciously crafted zone, the resolver may consume excessive CPU. Authoritative-only servers are generally unaffected, although there are circumstances where authoritative servers may make recursive queries (see: https://kb.isc.org/docs/why-does-my-authoritative-server-make-recursive-queries). This issue affects BIND 9 versions 9.11.0 through 9.16.50, 9.18.0 through 9.18.46, 9.20.0 through 9.20.20, 9.21.0 through 9.21.19, 9.11.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.46-S1, and 9.20.9-S1 through 9.20.20-S1.
CVSS 7.5 · Alta · EPSS 1,7% · Corrección disponible
- Publicación
- Actualización
Pila tecnológica: system
Productos y versiones afectados
bind 9
- Versiones
- ≥ 9.11.0, ≤ 9.16.50: Afectada (custom)
- ≥ 9.18.0, ≤ 9.18.46: Afectada (custom)
- ≥ 9.20.0, ≤ 9.20.20: Afectada (custom)
- ≥ 9.21.0, ≤ 9.21.19: Afectada (custom)
- ≥ 9.11.3-S1, ≤ 9.16.50-S1: Afectada (custom)
- ≥ 9.18.11-S1, ≤ 9.18.46-S1: Afectada (custom)
- ≥ 9.20.9-S1, ≤ 9.20.20-S1: Afectada (custom)
Sin corrección publicada
bind9 Debian:12
- Versiones
- 1:9.18.12-1
- 1:9.18.13-1
- 1:9.18.16-1
- 1:9.18.16-1~deb12u1
- 1:9.18.16-1~deb12u1~bpo11+1
- 1:9.18.19-1~deb12u1
- 1:9.18.19-1~deb12u1~bpo11+1
- 1:9.18.24-1
- 1:9.18.24-1~bpo11+1
- 1:9.18.28-1~deb12u1
- 1:9.18.28-1~deb12u2
- 1:9.18.33-1~deb12u2
- 1:9.18.41-1~deb12u1
- 1:9.18.44-1~deb12u1
- Intervalos de versiones afectados
- ECOSYSTEM: < 1:9.18.47-1~deb12u1
Actualiza a 1:9.18.47-1~deb12u1
bind9 Debian:13
- Versiones
- 1:9.20.11-4
- 1:9.20.15-1
- 1:9.20.15-1~deb13u1
- 1:9.20.15-1~deb13u1~bpo12+1
- 1:9.20.15-2
- 1:9.20.18-1
- 1:9.20.18-1~deb13u1
- 1:9.20.18-1~deb13u1~bpo12+1
- 1:9.20.19-1
- 1:9.20.19-1~bpo12+1
- 1:9.20.20-1
- 1:9.20.20-1~bpo12+1
- 1:9.20.21-1~deb13u1~bpo12+1
- Intervalos de versiones afectados
- ECOSYSTEM: < 1:9.20.21-1~deb13u1
Actualiza a 1:9.20.21-1~deb13u1
bind9 Debian:14
- Versiones
- 1:9.20.11-4
- 1:9.20.15-1
- 1:9.20.15-1~deb13u1
- 1:9.20.15-1~deb13u1~bpo12+1
- 1:9.20.15-2
- 1:9.20.18-1
- 1:9.20.18-1~deb13u1
- 1:9.20.18-1~deb13u1~bpo12+1
- 1:9.20.19-1
- 1:9.20.19-1~bpo12+1
- 1:9.20.20-1
- 1:9.20.20-1~bpo12+1
- 1:9.20.21-1~deb13u1
- 1:9.20.21-1~deb13u1~bpo12+1
- Intervalos de versiones afectados
- ECOSYSTEM: < 1:9.20.21-1
Actualiza a 1:9.20.21-1
bind9 Ubuntu:Pro:14.04:LTS
- Versiones
- 1:9.9.3.dfsg.P2-4ubuntu1
- 1:9.9.3.dfsg.P2-4ubuntu2
- 1:9.9.3.dfsg.P2-4ubuntu3
- 1:9.9.5.dfsg-2
- 1:9.9.5.dfsg-3
- 1:9.9.5.dfsg-3ubuntu0.1
- 1:9.9.5.dfsg-3ubuntu0.2
- 1:9.9.5.dfsg-3ubuntu0.3
- 1:9.9.5.dfsg-3ubuntu0.4
- 1:9.9.5.dfsg-3ubuntu0.5
- 1:9.9.5.dfsg-3ubuntu0.6
- 1:9.9.5.dfsg-3ubuntu0.7
- 1:9.9.5.dfsg-3ubuntu0.8
- 1:9.9.5.dfsg-3ubuntu0.9
- 1:9.9.5.dfsg-3ubuntu0.10
- 1:9.9.5.dfsg-3ubuntu0.11
- 1:9.9.5.dfsg-3ubuntu0.12
- 1:9.9.5.dfsg-3ubuntu0.13
- 1:9.9.5.dfsg-3ubuntu0.14
- 1:9.9.5.dfsg-3ubuntu0.15
- 1:9.9.5.dfsg-3ubuntu0.16
- 1:9.9.5.dfsg-3ubuntu0.17
- 1:9.9.5.dfsg-3ubuntu0.18
- 1:9.9.5.dfsg-3ubuntu0.19
- 1:9.9.5.dfsg-3ubuntu0.19+esm1
- 1:9.9.5.dfsg-3ubuntu0.19+esm2
- 1:9.9.5.dfsg-3ubuntu0.19+esm3
- 1:9.9.5.dfsg-3ubuntu0.19+esm4
- 1:9.9.5.dfsg-3ubuntu0.19+esm5
- 1:9.9.5.dfsg-3ubuntu0.19+esm6
- 1:9.9.5.dfsg-3ubuntu0.19+esm7
- 1:9.9.5.dfsg-3ubuntu0.19+esm9
- 1:9.9.5.dfsg-3ubuntu0.19+esm10
- 1:9.9.5.dfsg-3ubuntu0.19+esm11
- 1:9.9.5.dfsg-3ubuntu0.19+esm12
- 1:9.9.5.dfsg-3ubuntu0.19+esm13
- 1:9.9.5.dfsg-3ubuntu0.19+esm14
- Intervalos de versiones afectados
- ECOSYSTEM: < 1:9.9.5.dfsg-3ubuntu0.19+esm15
Actualiza a 1:9.9.5.dfsg-3ubuntu0.19+esm15
bind9 Ubuntu:Pro:16.04:LTS
- Versiones
- 1:9.9.5.dfsg-11ubuntu1
- 1:9.9.5.dfsg-12
- 1:9.9.5.dfsg-12.1
- 1:9.9.5.dfsg-12.1ubuntu1
- 1:9.10.3.dfsg.P2-4
- 1:9.10.3.dfsg.P2-5
- 1:9.10.3.dfsg.P4-3
- 1:9.10.3.dfsg.P4-4
- 1:9.10.3.dfsg.P4-5
- 1:9.10.3.dfsg.P4-8
- 1:9.10.3.dfsg.P4-8ubuntu1
- 1:9.10.3.dfsg.P4-8ubuntu1.1
- 1:9.10.3.dfsg.P4-8ubuntu1.2
- 1:9.10.3.dfsg.P4-8ubuntu1.3
- 1:9.10.3.dfsg.P4-8ubuntu1.4
- 1:9.10.3.dfsg.P4-8ubuntu1.5
- 1:9.10.3.dfsg.P4-8ubuntu1.6
- 1:9.10.3.dfsg.P4-8ubuntu1.7
- 1:9.10.3.dfsg.P4-8ubuntu1.8
- 1:9.10.3.dfsg.P4-8ubuntu1.9
- 1:9.10.3.dfsg.P4-8ubuntu1.10
- 1:9.10.3.dfsg.P4-8ubuntu1.11
- 1:9.10.3.dfsg.P4-8ubuntu1.12
- 1:9.10.3.dfsg.P4-8ubuntu1.14
- 1:9.10.3.dfsg.P4-8ubuntu1.15
- 1:9.10.3.dfsg.P4-8ubuntu1.16
- 1:9.10.3.dfsg.P4-8ubuntu1.17
- 1:9.10.3.dfsg.P4-8ubuntu1.18
- 1:9.10.3.dfsg.P4-8ubuntu1.19
- 1:9.10.3.dfsg.P4-8ubuntu1.19+esm1
- 1:9.10.3.dfsg.P4-8ubuntu1.19+esm2
- 1:9.10.3.dfsg.P4-8ubuntu1.19+esm3
- 1:9.10.3.dfsg.P4-8ubuntu1.19+esm5
- 1:9.10.3.dfsg.P4-8ubuntu1.19+esm6
- 1:9.10.3.dfsg.P4-8ubuntu1.19+esm7
- 1:9.10.3.dfsg.P4-8ubuntu1.19+esm8
- 1:9.10.3.dfsg.P4-8ubuntu1.19+esm9
- 1:9.10.3.dfsg.P4-8ubuntu1.19+esm10
- Intervalos de versiones afectados
- ECOSYSTEM: < 1:9.10.3.dfsg.P4-8ubuntu1.19+esm11
Actualiza a 1:9.10.3.dfsg.P4-8ubuntu1.19+esm11
bind9 Ubuntu:Pro:18.04:LTS
- Versiones
- 1:9.10.3.dfsg.P4-12.6ubuntu1
- 1:9.11.2.P1-1ubuntu2
- 1:9.11.2.P1-1ubuntu3
- 1:9.11.2.P1-1ubuntu4
- 1:9.11.2.P1-1ubuntu5
- 1:9.11.3+dfsg-1ubuntu1
- 1:9.11.3+dfsg-1ubuntu1.1
- 1:9.11.3+dfsg-1ubuntu1.2
- 1:9.11.3+dfsg-1ubuntu1.3
- 1:9.11.3+dfsg-1ubuntu1.5
- 1:9.11.3+dfsg-1ubuntu1.7
- 1:9.11.3+dfsg-1ubuntu1.8
- 1:9.11.3+dfsg-1ubuntu1.9
- 1:9.11.3+dfsg-1ubuntu1.10
- 1:9.11.3+dfsg-1ubuntu1.11
- 1:9.11.3+dfsg-1ubuntu1.12
- 1:9.11.3+dfsg-1ubuntu1.13
- 1:9.11.3+dfsg-1ubuntu1.14
- 1:9.11.3+dfsg-1ubuntu1.15
- 1:9.11.3+dfsg-1ubuntu1.16
- 1:9.11.3+dfsg-1ubuntu1.17
- 1:9.11.3+dfsg-1ubuntu1.18
- 1:9.11.3+dfsg-1ubuntu1.19+esm1
- 1:9.11.3+dfsg-1ubuntu1.19+esm2
- 1:9.11.3+dfsg-1ubuntu1.19+esm3
- 1:9.11.3+dfsg-1ubuntu1.19+esm4
- 1:9.11.3+dfsg-1ubuntu1.19+esm5
- Intervalos de versiones afectados
- ECOSYSTEM: < 1:9.11.3+dfsg-1ubuntu1.19+esm6
Actualiza a 1:9.11.3+dfsg-1ubuntu1.19+esm6
isc-dhcp Ubuntu:18.04:LTS
- Versiones
- 4.3.5-3ubuntu2
- 4.3.5-3ubuntu3
- 4.3.5-3ubuntu4
- 4.3.5-3ubuntu5
- 4.3.5-3ubuntu6
- 4.3.5-3ubuntu7
- 4.3.5-3ubuntu7.1
- 4.3.5-3ubuntu7.2
- 4.3.5-3ubuntu7.3
- 4.3.5-3ubuntu7.4
- Intervalos de versiones afectados
- ECOSYSTEM: (−∞, +∞)
Sin corrección publicada
bind9 Ubuntu:Pro:20.04:LTS
- Versiones
- 1:9.11.5.P4+dfsg-5.1ubuntu2
- 1:9.11.5.P4+dfsg-5.1ubuntu3
- 1:9.11.5.P4+dfsg-5.1ubuntu4
- 1:9.11.5.P4+dfsg-5.1ubuntu5
- 1:9.11.14+dfsg-1ubuntu1
- 1:9.11.14+dfsg-3ubuntu1
- 1:9.16.0-1ubuntu3
- 1:9.16.0-1ubuntu4
- 1:9.16.0-1ubuntu5
- 1:9.16.1-0ubuntu1
- 1:9.16.1-0ubuntu2
- 1:9.16.1-0ubuntu2.1
- 1:9.16.1-0ubuntu2.2
- 1:9.16.1-0ubuntu2.3
- 1:9.16.1-0ubuntu2.4
- 1:9.16.1-0ubuntu2.6
- 1:9.16.1-0ubuntu2.7
- 1:9.16.1-0ubuntu2.8
- 1:9.16.1-0ubuntu2.9
- 1:9.16.1-0ubuntu2.10
- 1:9.16.1-0ubuntu2.11
- 1:9.16.1-0ubuntu2.12
- 1:9.16.1-0ubuntu2.14
- 1:9.16.1-0ubuntu2.15
- 1:9.16.1-0ubuntu2.16
- 1:9.16.48-0ubuntu0.20.04.1
- 1:9.18.28-0ubuntu0.20.04.1
- 1:9.18.30-0ubuntu0.20.04.1
- 1:9.18.30-0ubuntu0.20.04.2
- 1:9.18.30-0ubuntu0.20.04.2+esm1
- 1:9.18.30-0ubuntu0.20.04.2+esm2
- Intervalos de versiones afectados
- ECOSYSTEM: < 1:9.18.30-0ubuntu0.20.04.2+esm3
Actualiza a 1:9.18.30-0ubuntu0.20.04.2+esm3
bind9-libs Ubuntu:20.04:LTS
- Versiones
- 1:9.11.16+dfsg-3~build1
- 1:9.11.16+dfsg-3~ubuntu1
- Intervalos de versiones afectados
- ECOSYSTEM: (−∞, +∞)
Sin corrección publicada
bind9 Ubuntu:22.04:LTS
- Versiones
- 1:9.16.15-1ubuntu1
- 1:9.16.15-1ubuntu2
- 1:9.16.15-1ubuntu3
- 1:9.18.0-2ubuntu1
- 1:9.18.0-2ubuntu2
- 1:9.18.0-2ubuntu3
- 1:9.18.1-1ubuntu1
- 1:9.18.1-1ubuntu1.1
- 1:9.18.1-1ubuntu1.2
- 1:9.18.1-1ubuntu1.3
- 1:9.18.12-0ubuntu0.22.04.1
- 1:9.18.12-0ubuntu0.22.04.2
- 1:9.18.12-0ubuntu0.22.04.3
- 1:9.18.18-0ubuntu0.22.04.1
- 1:9.18.18-0ubuntu0.22.04.2
- 1:9.18.24-0ubuntu0.22.04.1
- 1:9.18.28-0ubuntu0.22.04.1
- 1:9.18.30-0ubuntu0.22.04.1
- 1:9.18.30-0ubuntu0.22.04.2
- 1:9.18.39-0ubuntu0.22.04.1
- 1:9.18.39-0ubuntu0.22.04.2
- Intervalos de versiones afectados
- ECOSYSTEM: < 1:9.18.39-0ubuntu0.22.04.3
Actualiza a 1:9.18.39-0ubuntu0.22.04.3
bind9-libs Ubuntu:22.04:LTS
- Versiones
- 1:9.11.19+dfsg-2.1ubuntu1
- 1:9.11.19+dfsg-2.1ubuntu2
- 1:9.11.19+dfsg-2.1ubuntu3
- Intervalos de versiones afectados
- ECOSYSTEM: (−∞, +∞)
Sin corrección publicada
bind9 Ubuntu:24.04:LTS
- Versiones
- 1:9.18.18-0ubuntu2
- 1:9.18.21-0ubuntu1
- 1:9.18.24-0ubuntu3
- 1:9.18.24-0ubuntu4
- 1:9.18.24-0ubuntu5
- 1:9.18.28-0ubuntu0.24.04.1
- 1:9.18.30-0ubuntu0.24.04.1
- 1:9.18.30-0ubuntu0.24.04.2
- 1:9.18.39-0ubuntu0.24.04.1
- 1:9.18.39-0ubuntu0.24.04.2
- Intervalos de versiones afectados
- ECOSYSTEM: < 1:9.18.39-0ubuntu0.24.04.3
Actualiza a 1:9.18.39-0ubuntu0.24.04.3
isc-dhcp Ubuntu:24.04:LTS
- Versiones
- 4.4.3-P1-2ubuntu5
- 4.4.3-P1-4ubuntu1
- 4.4.3-P1-4ubuntu2
- Intervalos de versiones afectados
- ECOSYSTEM: (−∞, +∞)
Sin corrección publicada
bind9 Ubuntu:25.10
- Versiones
- 1:9.20.4-3ubuntu1
- 1:9.20.4-3ubuntu2
- 1:9.20.4-3ubuntu3
- 1:9.20.9-2ubuntu1
- 1:9.20.10-1ubuntu1
- 1:9.20.11-1ubuntu1
- 1:9.20.11-1ubuntu2
- 1:9.20.11-1ubuntu2.1
- Intervalos de versiones afectados
- ECOSYSTEM: < 1:9.20.11-1ubuntu2.2
Actualiza a 1:9.20.11-1ubuntu2.2
isc-dhcp Ubuntu:25.10
- Versiones
- 4.4.3-P1-4ubuntu2
- Intervalos de versiones afectados
- ECOSYSTEM: (−∞, +∞)
Sin corrección publicada
isc-dhcp Ubuntu:26.04:LTS
- Versiones
- 4.4.3-P1-4ubuntu2
- Intervalos de versiones afectados
- ECOSYSTEM: (−∞, +∞)
Sin corrección publicada
Fuentes originales
- https://kb.isc.org/docs/cve-2026-1519
- https://downloads.isc.org/isc/bind9/9.18.47
- https://downloads.isc.org/isc/bind9/9.20.21
- https://downloads.isc.org/isc/bind9/9.21.20
- https://lists.debian.org/debian-lts-announce/2026/04/msg00008.html
- https://access.redhat.com/security/cve/CVE-2026-1519
- https://bugzilla.redhat.com/show_bug.cgi?id=2451305
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-1519.json
- https://access.redhat.com/errata/RHSA-2026:11372
- https://access.redhat.com/errata/RHSA-2026:11371
- https://access.redhat.com/errata/RHSA-2026:34048
- https://access.redhat.com/errata/RHSA-2026:40021
- https://access.redhat.com/errata/RHSA-2026:36610
- https://access.redhat.com/errata/RHSA-2026:43226
- https://access.redhat.com/errata/RHSA-2026:62549
- https://access.redhat.com/errata/RHSA-2026:60019
- https://access.redhat.com/errata/RHSA-2026:65851
- https://access.redhat.com/errata/RHSA-2026:29863
- https://access.redhat.com/errata/RHSA-2026:24851
- https://access.redhat.com/errata/RHSA-2026:8312
- https://access.redhat.com/errata/RHSA-2026:8352
- https://access.redhat.com/errata/RHSA-2026:8155
- https://access.redhat.com/errata/RHSA-2026:16064
- https://nvd.nist.gov/vuln/detail/CVE-2026-1519