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-2026-35373

Fecha de publicación:

22/04/2026

Idioma:

Inglés

*** Pendiente de traducción *** A logic error in the ln utility of uutils coreutils causes the program to reject source paths containing non-UTF-8 filename bytes when using target-directory forms (e.g., ln SOURCE... DIRECTORY). While GNU ln treats filenames as raw bytes and creates the links correctly, the uutils implementation enforces UTF-8 encoding, resulting in a failure to stat the file and a non-zero exit code. In environments where automated scripts or system tasks process valid but non-UTF-8 filenames common on Unix filesystems, this divergence causes the utility to fail, leading to a local denial of service for those specific operations.

Gravedad CVSS v3.1: BAJA

Última modificación:

04/05/2026

CVE-2026-35368

Fecha de publicación:

22/04/2026

Idioma:

Inglés

*** Pendiente de traducción *** A vulnerability exists in the chroot utility of uutils coreutils when using the --userspec option. The utility resolves the user specification via getpwnam() after entering the chroot but before dropping root privileges. On glibc-based systems, this can trigger the Name Service Switch (NSS) to load shared libraries (e.g., libnss_*.so.2) from the new root directory. If the NEWROOT is writable by an attacker, they can inject a malicious NSS module to execute arbitrary code as root, facilitating a full container escape or privilege escalation.

Gravedad CVSS v3.1: ALTA

Última modificación:

24/04/2026

CVE-2026-35367

Fecha de publicación:

22/04/2026

Idioma:

Inglés

*** Pendiente de traducción *** The nohup utility in uutils coreutils creates its default output file, nohup.out, without specifying explicit restricted permissions. This causes the file to inherit umask-based permissions, typically resulting in a world-readable file (0644). In multi-user environments, this allows any user on the system to read the captured stdout/stderr output of a command, potentially exposing sensitive information. This behavior diverges from GNU coreutils, which creates nohup.out with owner-only (0600) permissions.

Gravedad CVSS v3.1: BAJA

Última modificación:

24/04/2026

CVE-2026-35369

Fecha de publicación:

22/04/2026

Idioma:

Inglés

*** Pendiente de traducción *** An argument parsing error in the kill utility of uutils coreutils incorrectly interprets kill -1 as a request to send the default signal (SIGTERM) to PID -1. Sending a signal to PID -1 causes the kernel to terminate all processes visible to the caller, potentially leading to a system crash or massive process termination. This differs from GNU coreutils, which correctly recognizes -1 as a signal number in this context and would instead report a missing PID argument.

Gravedad CVSS v3.1: MEDIA

Última modificación:

04/05/2026

CVE-2026-35366

Fecha de publicación:

22/04/2026

Idioma:

Inglés

*** Pendiente de traducción *** The printenv utility in uutils coreutils fails to display environment variables containing invalid UTF-8 byte sequences. While POSIX permits arbitrary bytes in environment strings, the uutils implementation silently skips these entries rather than printing the raw bytes. This vulnerability allows malicious environment variables (e.g., adversarial LD_PRELOAD values) to evade inspection by administrators or security auditing tools, potentially allowing library injection or other environment-based attacks to go undetected.

Gravedad CVSS v3.1: MEDIA

Última modificación:

04/05/2026

CVE-2026-35371

Fecha de publicación:

22/04/2026

Idioma:

Inglés

*** Pendiente de traducción *** The id utility in uutils coreutils exhibits incorrect behavior in its "pretty print" output when the real UID and effective UID differ. The implementation incorrectly uses the effective GID instead of the effective UID when performing a name lookup for the effective user. This results in misleading diagnostic output that can cause automated scripts or system administrators to make incorrect decisions regarding file permissions or access control.

Gravedad CVSS v3.1: BAJA

Última modificación:

04/05/2026

CVE-2026-35370

Fecha de publicación:

22/04/2026

Idioma:

Inglés

*** Pendiente de traducción *** The id utility in uutils coreutils miscalculates the groups= section of its output. The implementation uses a user&#39;s real GID instead of their effective GID to compute the group list, leading to potentially divergent output compared to GNU coreutils. Because many scripts and automated processes rely on the output of id to make security-critical access-control or permission decisions, this discrepancy can lead to unauthorized access or security misconfigurations.

Gravedad CVSS v3.1: MEDIA

Última modificación:

04/05/2026

CVE-2026-35363

Fecha de publicación:

22/04/2026

Idioma:

Inglés

*** Pendiente de traducción *** A vulnerability in the rm utility of uutils coreutils allows the bypass of safeguard mechanisms intended to protect the current directory. While the utility correctly refuses to delete . or .., it fails to recognize equivalent paths with trailing slashes, such as ./ or .///. An accidental or malicious execution of rm -rf ./ results in the silent recursive deletion of all contents within the current directory. The command further obscures the data loss by reporting a misleading &#39;Invalid input&#39; error, which may cause users to miss the critical window for data recovery.

Gravedad CVSS v3.1: MEDIA

Última modificación:

24/04/2026

CVE-2026-35364

Fecha de publicación:

22/04/2026

Idioma:

Inglés

*** Pendiente de traducción *** A Time-of-Check to Time-of-Use (TOCTOU) race condition exists in the mv utility of uutils coreutils during cross-device operations. The utility removes the destination path before recreating it through a copy operation. A local attacker with write access to the destination directory can exploit this window to replace the destination with a symbolic link. The subsequent privileged move operation will follow the symlink, allowing the attacker to redirect the write and overwrite an arbitrary target file with contents from the source.

Gravedad CVSS v3.1: MEDIA

Última modificación:

24/04/2026

CVE-2026-35365

Fecha de publicación:

22/04/2026

Idioma:

Inglés

*** Pendiente de traducción *** The mv utility in uutils coreutils improperly handles directory trees containing symbolic links during moves across filesystem boundaries. Instead of preserving symlinks, the implementation expands them, copying the linked targets as real files or directories at the destination. This can lead to resource exhaustion (disk space or time) if symlinks point to large external directories, unexpected duplication of sensitive data into unintended locations, or infinite recursion and repeated copying in the presence of symlink loops.

Gravedad CVSS v3.1: MEDIA

Última modificación:

04/05/2026

CVE-2026-35360

Fecha de publicación:

22/04/2026

Idioma:

Inglés

*** Pendiente de traducción *** The touch utility in uutils coreutils is vulnerable to a Time-of-Check to Time-of-Use (TOCTOU) race condition during file creation. When the utility identifies a missing path, it later attempts creation using File::create(), which internally uses O_TRUNC. An attacker can exploit this window to create a file or swap a symlink at the target path, causing touch to truncate an existing file and leading to permanent data loss.

Gravedad CVSS v3.1: MEDIA

Última modificación:

24/04/2026

CVE-2026-35359

Fecha de publicación:

22/04/2026

Idioma:

Inglés

*** Pendiente de traducción *** A Time-of-Check to Time-of-Use (TOCTOU) vulnerability in the cp utility of uutils coreutils allows an attacker to bypass no-dereference intent. The utility checks if a source path is a symbolic link using path-based metadata but subsequently opens it without the O_NOFOLLOW flag. An attacker with concurrent write access can swap a regular file for a symbolic link during this window, causing a privileged cp process to copy the contents of arbitrary sensitive files into a destination controlled by the attacker.

Gravedad CVSS v3.1: MEDIA

Última modificación:

24/04/2026

Suscribirse a Vulnerabilidades