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Vulnerabilidades de bind9

Vulnerabilidades publicadas para bind9 en los últimos 30 días: 4. Incluidas en el catálogo KEV: 0.

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Vulnerabilidades: 159

  1. CVE-2026-97313

    Alta · CVSS 7.5EPSS 0,45%Corrección disponible

    Specific RPZ configurations and query patterns may result in an unexpected exit

    A recursive BIND server that receives a query with recursion desired (RD=1) followed by a non-recursive query (RD=0) may exit with an assertion failure, resulting in a denial of service. To be vulnerable, the BIND server must allow recursive queries and have at least two RPZ zones configured: one with the default setting of "recursive-only yes", and the other with "recursive-only no". 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, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.29-S1.

    bind9Sistemas operativos
    • Actualiza a 1:9.20.30-1
    Publicación Actualización
    Aviso original 1 ↗Aviso original 2 ↗Aviso original 3 ↗

  2. CVE-2026-96888

    Alta · CVSS 7.5EPSS 0,46%Corrección disponible

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

    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.

    bind9Sistemas operativos
    • Actualiza a 1:9.20.30-1
    Publicación Actualización
    Aviso original 1 ↗Aviso original 2 ↗Aviso original 3 ↗

  3. CVE-2026-94300

    Alta · CVSS 8.1EPSS 0,73%Código de explotación públicoCorrección disponible

    Concurrent GSS-TSIG messages corrupt memory

    Replaying GSS-TSIG signed UDP messages can result in memory corruption in "`named`". An attacker who can capture a previously signed UDP message can replay it while the negotiated TSIG key is still valid. By also sending crafted queries to a zone the attacker controls, the attacker may potentially achieve remote code execution. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.29, 9.21.0 through 9.21.26, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.29-S1.

    bind9Sistemas operativos
    • Actualiza a 1:9.20.30-1
    Publicación Actualización
    Aviso original 1 ↗Aviso original 2 ↗Aviso original 3 ↗

  4. CVE-2026-19630

    Alta · CVSS 7.5EPSS 0,45%Corrección disponible

    Amplified resource exhaustion in inbound message processing

    In a BIND resolver, inbound DNS protocol messages with a particular structure will result in additional processing, with no limit imposed by BIND. A DNS message with a maliciously large number of such structures will cause BIND to consume disproportionate amounts of CPU time and memory during processing. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.29, 9.21.0 through 9.21.26, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.29-S1.

    bind9Sistemas operativos
    • Actualiza a 1:9.20.30-1
    Publicación Actualización
    Aviso original 1 ↗Aviso original 2 ↗Aviso original 3 ↗

  5. CVE-2026-77119

    Media · CVSS 5.9EPSS 0,23%Corrección disponible

    NSEC3 insecure-referral proof can use unrelated cached NSEC3 RRsets

    A validly signed NSEC3 from an unrelated sibling zone may be accepted as an insecurity proof, downgrading a secure delegation and letting a forged unsigned answer through. 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.

    bind9Sistemas operativos
    • Actualiza a 1:9.20.29-1
    Publicación Actualización
    Aviso original 1 ↗Aviso original 2 ↗Aviso original 3 ↗

  6. CVE-2026-75029

    Media · CVSS 5.3EPSS 0,48%Corrección disponible

    Message parser retains every identical singleton RDATA, enabling wire-to-work amplification

    In a query response, an attacker may send `named` multiple copies of a record that should only exist once (such as an SOA record). If the RDATA is the same on all the copies, the record is appended to the in-memory RDATA set, which can cause increased memory usage of the negative cache and possibly lead to other memory attack vectors. 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.

    bind9Sistemas operativos
    • Actualiza a 1:9.20.29-1
    Publicación Actualización
    Aviso original 1 ↗Aviso original 2 ↗Aviso original 3 ↗

  7. CVE-2026-19668

    Media · CVSS 5.3EPSS 0,48%Corrección disponible

    Resource Exhaustion via Excessive DNSSEC Cryptographic Material Matching

    A BIND recursive resolver may experience excessive resource consumption if it encounters large numbers of a particular kind of invalid DNSSEC record. Default limits on "max-records-per-type" and "max-types-per-name" help mitigate the exposure. 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.

    bind9Sistemas operativos
    • Actualiza a 1:9.20.29-1
    Publicación Actualización
    Aviso original 1 ↗Aviso original 2 ↗Aviso original 3 ↗

  8. CVE-2026-19033

    Media · CVSS 6.5EPSS 0,24%Corrección disponible

    Unauthenticated IXFR deltas are applied to the live zone before TSIG verification

    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-S

    bind9Sistemas operativos
    • Actualiza a 1:9.20.29-1
    Publicación Actualización
    Aviso original 1 ↗Aviso original 2 ↗Aviso original 3 ↗

  9. CVE-2026-80274

    Alta · CVSS 7.5EPSS 0,57%Corrección disponible

    Validating resolver can abort while caching a mismatched NOQNAME proof

    If a BIND resolver sends a query for a DNSSEC-signed authoritative zone, and the authoritative server replies with a valid wildcard answer and signed NSEC3 proof, followed by an unsigned NSEC at the same owner name, it will trigger an unexpected program exit. 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.

    bind9Sistemas operativos
    • Actualiza a 1:9.20.29-1
    Publicación Actualización
    Aviso original 1 ↗Aviso original 2 ↗Aviso original 3 ↗

  10. CVE-2026-76163

    Alta · CVSS 7.5EPSS 0,57%Corrección disponible

    named aborts on a TKEY query when the user configuration has no global options statement

    If BIND is loaded with a "`named.conf`" file that contains no global "`options`" block, an attacker can send a query of QTYPE TKEY which may cause an assertion failure and subsequent unexpected program exit. This issue affects BIND 9 versions 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, and 9.20.9-S1 through 9.20.27-S1.

    bind9Sistemas operativos
    • Actualiza a 1:9.20.29-1
    Publicación Actualización
    Aviso original 1 ↗Aviso original 2 ↗Aviso original 3 ↗

  11. CVE-2026-19666

    Alta · CVSS 7.5EPSS 0,57%Corrección disponible

    Use-after-free in query_addnoqnameproof() via the DNS64 filter64 path

    On a resolver configured to use ``dns64``, if an applicable answer from the authoritative server is malformed in a specific way, the resolver `named` process will exit unexpectedly. 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.

    bind9Sistemas operativos
    • Actualiza a 1:9.20.29-1
    Publicación Actualización
    Aviso original 1 ↗Aviso original 2 ↗Aviso original 3 ↗

  12. CVE-2026-81563

    Alta · CVSS 7.5EPSS 0,57%Corrección disponible

    SVCB AliasMode additional-data error leaks qpcache references

    A BIND resolver encountering an SVCB/HTTPS AliasMode record referencing 14 or more SVCB/HTTPS ServiceMode records may fail to properly deallocate internal resources. If this happens repeatedly, resource exhaustion will eventually prevent the resolver from performing new recursive lookups. This issue affects BIND 9 versions 9.18.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.18.11-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.

    bind9Sistemas operativos
    • Actualiza a 1:9.20.29-1
    Publicación Actualización
    Aviso original 1 ↗Aviso original 2 ↗Aviso original 3 ↗

  13. CVE-2026-78301

    Media · CVSS 5.8EPSS 0,21%Corrección disponible

    Out-of-zone database nodes can become authoritative zone cuts

    A malformed zone may contain an NS or DNAME node above its origin, which `named` treats as a zone cut. If an attacker inserts a malformed zone into a BIND authoritative server (e.g., via zone transfer), queries for names inside the configured zone then lose authoritative status and return an out-of-zone delegation. On a server that also provides recursion BIND can follow this locally sourced cut and cache attacker-supplied data, affecting names outside the configured zone. This situation persists as long as the malformed zone remains in the zone database. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.

    bind9Sistemas operativos
    • Actualiza a 1:9.20.29-1
    Publicación Actualización
    Aviso original 1 ↗Aviso original 2 ↗Aviso original 3 ↗

  14. CVE-2026-77692

    Alta · CVSS 7.5EPSS 6,56%Corrección disponible

    Unauthenticated remote crash of named via a single DoH SIG(0) request

    An attacker can cause `named` to abort by sending a crafted DNS-over-HTTPS request with a cryptographically invalid SIG(0) record, and then closing the transport connection prematurely. This issue affects BIND 9 versions 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, and 9.20.9-S1 through 9.20.27-S1.

    bind9Sistemas operativos
    • Actualiza a 1:9.20.29-1
    Publicación Actualización
    Aviso original 1 ↗Aviso original 2 ↗Aviso original 3 ↗

  15. CVE-2026-19941

    Media · CVSS 5.9EPSS 0,23%Corrección disponible

    checkwildcard() accepts an out-of-zone NSEC as a wildcard-nonexistence proof

    An inapplicable NSEC record may be accepted by a `named` resolver as proof that no wildcard exists, which could allow an attacker at the same or an upstream level of the zone name to mask the existence of a victim's wildcard record. 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.

    bind9Sistemas operativos
    • Actualiza a 1:9.20.29-1
    Publicación Actualización
    Aviso original 1 ↗Aviso original 2 ↗Aviso original 3 ↗

  16. CVE-2026-19662

    Media · CVSS 5.9EPSS 0,46%Corrección disponible

    qpcache NOQNAME proof use-after-free crashes recursive resolver

    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.

    bind9Sistemas operativos
    • Actualiza a 1:9.20.29-1
    Publicación Actualización
    Aviso original 1 ↗Aviso original 2 ↗Aviso original 3 ↗

  17. CVE-2026-19667

    Alta · CVSS 7.5EPSS 0,57%Corrección disponible

    Remote assertion failure via 16-bit length truncation in `dns_ncache_add()`

    If an attacker-controlled authoritative server can produce a negative answer that is exactly 65536 bytes, then a flaw in `named` results in a negative cache entry of 0 bytes. When this entry is subsequently read, `named` aborts. 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.

    bind9Sistemas operativos
    • Actualiza a 1:9.20.29-1
    Publicación Actualización
    Aviso original 1 ↗Aviso original 2 ↗Aviso original 3 ↗

  18. CVE-2026-81736

    Alta · CVSS 7.5EPSS 0,57%Corrección disponible

    Remote CPU denial of service through cached SVCB/HTTPS AliasMode trees

    If a BIND resolver has cached a tree of SVCB/HTTPS AliasMode records, and is then queried for the root of that tree, the resolver will spend disproportionate CPU time constructing the response. This issue affects BIND 9 versions 9.18.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.18.11-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.

    bind9Sistemas operativos
    • Actualiza a 1:9.20.29-1
    Publicación Actualización
    Aviso original 1 ↗Aviso original 2 ↗Aviso original 3 ↗

  19. CVE-2026-13321

    Alta · CVSS 8.6EPSS 0,21%Corrección disponible

    DNSSEC Validation Bypass via Out-of-Zone NSEC Next Field

    The BIND resolver accepts validly-signed NSEC records where the "Next Domain Name" field points outside the signer's zone. This issue affects BIND 9 versions 9.11.0 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.

    bind9Sistemas operativos
    • Actualiza a 1:9.20.26-1
    Publicación Actualización
    Aviso original 1 ↗Aviso original 2 ↗Aviso original 3 ↗

  20. CVE-2026-13204

    Alta · CVSS 7.5EPSS 0,52%Corrección disponible

    Unexpected exit in certain situations with NSEC and NSEC3 both present

    If a provably insecure domain is covered by both an NSEC and NSEC3 record at the parent, and there exist an RRSIG for only one of these types, then BIND may exit unexpectedly with an assertion while validating this proof. This issue affects BIND 9 versions 9.11.0 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.

    bind9Sistemas operativos
    • Actualiza a 1:9.20.26-1
    Publicación Actualización
    Aviso original 1 ↗Aviso original 2 ↗Aviso original 3 ↗

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