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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-2026-62436
Fecha de publicación:
28/07/2026
Idioma:
Inglés
*** Pendiente de traducción *** [This CNA information record relates to multiple CVEs; the<br /> text explains which aspects/vulnerabilities correspond to which CVE.]<br /> <br /> With the introduction of Grant Table v2 came the requirement to be able to<br /> switch between versions. Switching from v1 to v2 reduces the number of<br /> valid grant references, as a bigger shared entry structure is then needed<br /> while the shared table doesn&amp;#39;t change size. Switching from v2 back to v1<br /> the status frames, which are separate in v2, go away.<br /> <br /> Code holding, but intermediately dropping and then re-acquiring the grant<br /> table lock, sometimes wrongly assumes that said properties wouldn&amp;#39;t change<br /> across the window in time where the lock is not being held.<br /> <br /> The v1 -&gt; v2 issue is CVE-2026-62435.<br /> <br /> The v2 -&gt; v1 issue is CVE-2026-62436.
Gravedad CVSS v3.1: MEDIA
Última modificación:
28/07/2026

CVE-2026-62428
Fecha de publicación:
28/07/2026
Idioma:
Inglés
*** Pendiente de traducción *** When grant-copy operations are processed, the respective grant may or may<br /> not already be in use by another operation (a mapping or another copy).<br /> For all copy operations the referenced guest frame is looked up. When<br /> another operation is already active for the grant (the grant is "pinned"),<br /> what is being supplied back to actually carry out permission checks and<br /> copy operation may not be consistent: The permission check may be carried<br /> out on a page different from the one involved in the copy.
Gravedad CVSS v3.1: ALTA
Última modificación:
28/07/2026

CVE-2026-62429
Fecha de publicación:
28/07/2026
Idioma:
Inglés
*** Pendiente de traducción *** Accessing the vNUMA configuration data of a guest is still possible when<br /> domain destruction has already started. The cleaning up of that<br /> configuration information is not synchronized with its retrieval by a<br /> device model controlling the guest.
Gravedad CVSS v3.1: MEDIA
Última modificación:
28/07/2026

CVE-2026-62430
Fecha de publicación:
28/07/2026
Idioma:
Inglés
*** Pendiente de traducción *** Accesses to the CMOS memory contents are done using an indirect IO port<br /> pair. Therefore Xen needs to cache the guest chosen index, and one of<br /> the usages of the index didn&amp;#39;t take the necessary locking to avoid<br /> concurrent changes. As a result, a guest could change the index after<br /> it being checked, causing a subsequent out-of-bound read access to the<br /> contents of an array.
Gravedad CVSS v3.1: ALTA
Última modificación:
28/07/2026

CVE-2026-62423
Fecha de publicación:
28/07/2026
Idioma:
Inglés
*** Pendiente de traducción *** [This CNA information record relates to multiple CVEs; the<br /> text explains which aspects/vulnerabilities correspond to which CVE.]<br /> <br /> The directory and Rock Ridge / SUSP walk in libfsimage&amp;#39;s iso9660 driver<br /> derives several lengths directly from attacker-controlled on-disk fields<br /> without validating them:<br /> <br /> * The directory loop itself assumes a good record length. This is<br /> CVE-2026-42494.<br /> <br /> * The calculation of the System Use area may underflow. This is<br /> CVE-2026-42495.<br /> <br /> * The Rock Ridge extension loop assumes a good (inner) record length.<br /> This is CVE-2026-62423.<br /> <br /> * The Rock Ridge NM record processing assumes a good entry length.<br /> This is CVE-2026-62424.<br /> <br /> * The Rock Ridge CE record processing assumes a good size and offset.<br /> This is CVE-2026-62425.
Gravedad CVSS v3.1: MEDIA
Última modificación:
28/07/2026

CVE-2026-62424
Fecha de publicación:
28/07/2026
Idioma:
Inglés
*** Pendiente de traducción *** [This CNA information record relates to multiple CVEs; the<br /> text explains which aspects/vulnerabilities correspond to which CVE.]<br /> <br /> The directory and Rock Ridge / SUSP walk in libfsimage&amp;#39;s iso9660 driver<br /> derives several lengths directly from attacker-controlled on-disk fields<br /> without validating them:<br /> <br /> * The directory loop itself assumes a good record length. This is<br /> CVE-2026-42494.<br /> <br /> * The calculation of the System Use area may underflow. This is<br /> CVE-2026-42495.<br /> <br /> * The Rock Ridge extension loop assumes a good (inner) record length.<br /> This is CVE-2026-62423.<br /> <br /> * The Rock Ridge NM record processing assumes a good entry length.<br /> This is CVE-2026-62424.<br /> <br /> * The Rock Ridge CE record processing assumes a good size and offset.<br /> This is CVE-2026-62425.
Gravedad CVSS v3.1: MEDIA
Última modificación:
28/07/2026

CVE-2026-62425
Fecha de publicación:
28/07/2026
Idioma:
Inglés
*** Pendiente de traducción *** [This CNA information record relates to multiple CVEs; the<br /> text explains which aspects/vulnerabilities correspond to which CVE.]<br /> <br /> The directory and Rock Ridge / SUSP walk in libfsimage&amp;#39;s iso9660 driver<br /> derives several lengths directly from attacker-controlled on-disk fields<br /> without validating them:<br /> <br /> * The directory loop itself assumes a good record length. This is<br /> CVE-2026-42494.<br /> <br /> * The calculation of the System Use area may underflow. This is<br /> CVE-2026-42495.<br /> <br /> * The Rock Ridge extension loop assumes a good (inner) record length.<br /> This is CVE-2026-62423.<br /> <br /> * The Rock Ridge NM record processing assumes a good entry length.<br /> This is CVE-2026-62424.<br /> <br /> * The Rock Ridge CE record processing assumes a good size and offset.<br /> This is CVE-2026-62425.
Gravedad CVSS v3.1: MEDIA
Última modificación:
28/07/2026

CVE-2026-62426
Fecha de publicación:
28/07/2026
Idioma:
Inglés
*** Pendiente de traducción *** [This CNA information record relates to multiple CVEs; the<br /> text explains which aspects/vulnerabilities correspond to which CVE.]<br /> <br /> To manage the system, sysctl and platform operations are used by the<br /> control domain or a possible Xenstore domain. Some of these operations<br /> may not be executed in parallel, so a system-wide lock each is used.<br /> The way those locks are acquired is, however, not providing any fairness.<br /> Furthermore, with XSM/Flask in use, the lock acquire will, for some<br /> operations, occur ahead of any permission checking.<br /> <br /> The sysctl issue is CVE-2026-62426.<br /> <br /> The platform-op issue is CVE-2026-62427.
Gravedad CVSS v3.1: ALTA
Última modificación:
28/07/2026

CVE-2026-62427
Fecha de publicación:
28/07/2026
Idioma:
Inglés
*** Pendiente de traducción *** [This CNA information record relates to multiple CVEs; the<br /> text explains which aspects/vulnerabilities correspond to which CVE.]<br /> <br /> To manage the system, sysctl and platform operations are used by the<br /> control domain or a possible Xenstore domain. Some of these operations<br /> may not be executed in parallel, so a system-wide lock each is used.<br /> The way those locks are acquired is, however, not providing any fairness.<br /> Furthermore, with XSM/Flask in use, the lock acquire will, for some<br /> operations, occur ahead of any permission checking.<br /> <br /> The sysctl issue is CVE-2026-62426.<br /> <br /> The platform-op issue is CVE-2026-62427.
Gravedad CVSS v3.1: ALTA
Última modificación:
28/07/2026

CVE-2026-49332
Fecha de publicación:
28/07/2026
Idioma:
Inglés
*** Pendiente de traducción *** A flaw was found in openshift/oauth-proxy. The proxy sets authenticated identity headers using only dash-variant keys (X-Forwarded-User) but does not strip underscore-variant keys (X_Forwarded_User) from incoming requests. WSGI and PHP frameworks normalize both variants to the same variable, allowing an authenticated low-privilege user to smuggle a forged identity that may override the legitimate authenticated identity in the upstream application.
Gravedad CVSS v3.1: ALTA
Última modificación:
28/07/2026

CVE-2026-42492
Fecha de publicación:
28/07/2026
Idioma:
Inglés
*** Pendiente de traducción *** Xenstore, to have an up-to-date picture of the entire system, wants to<br /> know of domains appearing and disappearing. To make this more robust, a<br /> new XEN_DOMCTL_get_domain_state was introduced. The management of the<br /> bitmap underlying that operation is tied into the binding of the<br /> VIRQ_DOM_EXC virtual IRQ. Unfortunately an error path there would tear<br /> down the bitmap even in cases when it wasn&amp;#39;t set up. Unprivileged domains<br /> can trigger that error path.
Gravedad CVSS v3.1: ALTA
Última modificación:
28/07/2026

CVE-2026-42493
Fecha de publicación:
28/07/2026
Idioma:
Inglés
*** Pendiente de traducción *** Addressing certain issues, in particular related to operations which may<br /> take excessively long and therefore would need preemption, has turned out<br /> overly costly. Since alternatives (HVM/PVH: HAP, PV: shim) are commonly<br /> available, the decision was to deprecate the functionality, while still<br /> retaining it for people to use at their own (security) risk. Memory-wise<br /> small enough guests may still be okay to run.
Gravedad CVSS v3.1: ALTA
Última modificación:
28/07/2026
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