Vulnerabilidades

Con el objetivo de informar, advertir y ayudar a los profesionales sobre las últimas vulnerabilidades de seguridad en sistemas tecnológicos, ponemos a disposición de los usuarios interesados en esta información una base de datos con información en castellano sobre cada una de las últimas vulnerabilidades documentadas y conocidas.

Este repositorio con más de 75.000 registros esta basado en la información de NVD (National Vulnerability Database) – en función de un acuerdo de colaboración – por el cual desde INCIBE realizamos la traducción al castellano de la información incluida. En ocasiones este listado mostrará vulnerabilidades que aún no han sido traducidas debido a que se recogen en el transcurso del tiempo en el que el equipo de INCIBE realiza el proceso de traducción.

Se emplea el estándar de nomenclatura de vulnerabilidades CVE (Common Vulnerabilities and Exposures), con el fin de facilitar el intercambio de información entre diferentes bases de datos y herramientas. Cada una de las vulnerabilidades recogidas enlaza a diversas fuentes de información así como a parches disponibles o soluciones aportadas por los fabricantes y desarrolladores. Es posible realizar búsquedas avanzadas teniendo la opción de seleccionar diferentes criterios como el tipo de vulnerabilidad, fabricante, tipo de impacto entre otros, con el fin de acortar los resultados.

Mediante suscripción RSS o Boletines podemos estar informados diariamente de las últimas vulnerabilidades incorporadas al repositorio.

CVE-2026-11605

Fecha de publicación:

22/07/2026

Idioma:

Inglés

*** Pendiente de traducción *** The issue is a resource exhaustion vulnerability associated with DNSSEC validation. BIND always validates all RRSIG records in an answer, even if they are not strictly needed. A query to an authoritative server/zone which returns many valid but superfluous RRSIG records causes the validator to waste disproportionate CPU time.<br /> This issue affects BIND 9 versions 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, and 9.20.9-S1 through 9.20.24-S1.

Gravedad CVSS v3.1: ALTA

Última modificación:

22/07/2026

CVE-2026-11622

Fecha de publicación:

22/07/2026

Idioma:

Inglés

*** Pendiente de traducción *** A DNSSEC validating resolver that is under a random subdomain attack against a DNSSEC-signed zone can suffer from runaway memory usage. The attacker needs to be able to send queries faster than the resolver can perform validation. The increased memory usage can be orders of magnitude beyond the limit configured in the `max-cache-size` parameter.<br /> 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.

Gravedad CVSS v3.1: ALTA

Última modificación:

22/07/2026

CVE-2026-11721

Fecha de publicación:

22/07/2026

Idioma:

Inglés

*** Pendiente de traducción *** It is possible for an attacker&#39;s zone to respond to a query with an RRSIG that has a smaller number of labels than the zone in which the RRSIG is contained. This causes `named` to produce a wildcard name for a zone that is shorter than the attacker&#39;s zone, which can result in cache poisoning. For this attack to have any effect, the resolver under attack must have set `synth-from-dnssec yes;` (which is the default).<br /> 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.

Gravedad CVSS v3.1: ALTA

Última modificación:

22/07/2026

CVE-2026-12617

Fecha de publicación:

22/07/2026

Idioma:

Inglés

*** Pendiente de traducción *** The issue is unexpected program termination based on ordering and/or specific content in responses to queries for CNAME or DNAME, and A records. Specifically, if a client queries for a DNAME and A record below the DNAME to the resolver, and the authoritative server responds positively to the A query but delays the DNAME response and later responds negatively, `named` may quit unexpectedly. Or, if a client queries for a CNAME and A record for the same name to the resolver, and the authoritative server responds positively to the A query but delays the CNAME response and later responds with a self-referential CNAME, the same failure may occur.<br /> This issue affects BIND 9 versions 9.18.0 through 9.18.50, 9.20.0 through 9.20.24, 9.18.11-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.24-S1.

Gravedad CVSS v3.1: ALTA

Última modificación:

22/07/2026

CVE-2026-56444

Fecha de publicación:

22/07/2026

Idioma:

Inglés

*** Pendiente de traducción *** In NLnet Labs Unbound 1.20.0 up to and including 1.25.1, when Unbound is configured with &#39;serve-expired: yes&#39; and &#39;serve-expired-client-timeout > discard-timeout > 0&#39; (contrary to the suggested values), the discard-timeout branch during the serve expired logic drops an aged client reply without performing the correct accounting for the number of reply addresses for the query. Other identical branches outside of serve expired perform the correct decrement. Since the counter is never decremented in such scenario, it can reach the maximum limit and new clients for duplicate in-flight queries are silently dropped resulting in degradation of resolution service. A malicious actor can exploit the vulnerability by querying the resolver for a client-controlled slow-on-demand authoritative zone that can drive the counter past the threshold. Shipped defaults for &#39;serve-expired-client-timeout: 1800&#39; and &#39;discard-timeout: 1900&#39; make the branch unreachable.

Gravedad CVSS v3.1: MEDIA

Última modificación:

24/07/2026

CVE-2026-56416

Fecha de publicación:

22/07/2026

Idioma:

Inglés

*** Pendiente de traducción *** In NLnet Labs Unbound up to and including version 1.25.1, when the validator builds the canonical RDATA form for an RRSIG-covered PX/RP/MINFO/SOA RRset, it computes the address of the second embedded domain name as &#39;datstart + dname_valid(datstart, ...)&#39; and passes it straight to &#39;query_dname_tolower()&#39; without checking that a second name is actually present in the RDATA. The wire-format parser accepts multi-dname RRs whose RDATA ends after the first name, so an attacker who runs a DNSSEC-signed authoritative server can deliver a record with an absent second domain name (e.g. SOA record) and cause &#39;query_dname_tolower()&#39; to walk label-by-label through stale bytes in the per-worker &#39;env->scratch_buffer&#39;, past the end of that heap allocation if &#39;msg-buffer-size&#39; has been lowered from the default. This leads to heap buffer overflow and on a release build the outcome relies heavily on the contents of the buffer tail and the adjacent heap chunk.

Gravedad CVSS v3.1: MEDIA

Última modificación:

24/07/2026

CVE-2026-62144

Fecha de publicación:

22/07/2026

Idioma:

Inglés

*** Pendiente de traducción *** An authentication bypass vulnerability in Check Point Security Management and Multi-Domain Security Management allows an unauthenticated remote attacker to execute administrative commands on the Management Server. Successful exploitation may also allow command execution on managed Security Gateways. Exploitation requires network access to the Management Server without firewall protection or a configuration that does not restrict Trusted Clients.

Gravedad CVSS v3.1: CRÍTICA

Última modificación:

24/07/2026

CVE-2026-62145

Fecha de publicación:

22/07/2026

Idioma:

Inglés

*** Pendiente de traducción *** A vulnerability in Check Point Gaia Portal allows an authenticated attacker with read-only Gaia Portal privileges to execute commands with root privileges.

Gravedad CVSS v3.1: ALTA

Última modificación:

24/07/2026

CVE-2026-54478

Fecha de publicación:

22/07/2026

Idioma:

Inglés

*** Pendiente de traducción *** In NLnet Labs Unbound 1.18.0 up to and including 1.25.1, when Unbound listens on a &#39;proxy-protocol-port&#39; interface with &#39;answer-cookie: yes&#39;, the RFC 9018 server-cookie SipHash is computed over the proxy&#39;s wire address instead of the PROXYv2-declared client. One server cookie obtained through a given proxy node therefore validates for every PROXYv2-declared source behind that node. On a UDP+proxy-protocol front, an off-path attacker can harvest one cookie with a single legitimate query, then replay it under any spoofed source and pass DNS Cookie checks that were deployed to defeat this in the first place.

Gravedad CVSS v3.1: BAJA

Última modificación:

24/07/2026

CVE-2026-55708

Fecha de publicación:

22/07/2026

Idioma:

Inglés

*** Pendiente de traducción *** In NLnet Labs Unbound 1.6.0 up to and including 1.25.1, the &#39;view_local_data&#39; and &#39;view_local_datas&#39; commands of &#39;unbound-control&#39; create a bare local zones tree for an already configured named view when the view is configured with no local data to begin with. However, the creation through the control interface omits adding the default-protected zones (e.g., RFC 1918 reverse, AS112 zones, .onion, .localhost). Once the local zone tree exists without the defaults, every query for a default-protected name from a client mapped to that view escapes to the public DNS via the iterator instead of being answered locally, bypassing local policy expectations.

Gravedad CVSS v3.1: BAJA

Última modificación:

24/07/2026

CVE-2026-55717

Fecha de publicación:

22/07/2026

Idioma:

Inglés

*** Pendiente de traducción *** In NLnet Labs Unbound 1.10.0 up to and including 1.25.1, when &#39;serve-expired: yes&#39; is set together with a &#39;response-ip: redirect&#39; /&#39;response-ip-data: CNAME &#39; rule (or the RPZ &#39;rpz-cname-override&#39; equivalent), a remote client who controls any delegated domain can crash the daemon. The serve-expired-client-timeout callback runs a two-pass loop to chase the respip-generated CNAME alias; on the second pass it resets &#39;alias_rrset&#39; but not &#39;partial_rep&#39;. Later, this inconsistency leads to a NULL pointer dereference and an eventual crash. A malicious actor can exploit the vulnerability by controlling any zone that replies with an A/AAAA record that falls inside the configured response-ip/rpz subnet. By delaying the answer when the previous record has expired, the vulnerable path of &#39;serve-expired-client-timeout&#39; is taken leading to denial of service via the server crash.

Gravedad CVSS v3.1: MEDIA

Última modificación:

24/07/2026

CVE-2026-55973

Fecha de publicación:

22/07/2026

Idioma:

Inglés

*** Pendiente de traducción *** In NLnet Labs Unbound 1.23.0 up to and including 1.25.1, when &#39;dns-error-reporting: yes&#39; is set, the EDNS Report-Channel option (code 18) from the last upstream response is read and uses the option&#39;s length as the length of the agent domain. When a domain name check is performed on the agent domain, the returned lenght is not used and if the agent domain is followed by garbage, those bytes are moved onto the tail of the synthetic &#39;_er.&#39; report query name. That query name is later used in the iterator via a subquery to send out the DNS Error Report and when Unbound tries to walk that query name during &#39;find_closest_of_type()&#39;, it strips labels using the query name length rather than stopping at the embedded root, walks one byte past it, and feeds the first garbage byte to &#39;dname_query_hash()&#39; as a label length writing over the stack variable &#39;labuf&#39;. One ordinary upstream response from a delegated zone the attacker controls is sufficient to terminate the daemon.

Gravedad CVSS v3.1: ALTA

Última modificación:

24/07/2026

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