CVE-2026-82018
Gravedad CVSS v4.0:
MEDIA
Tipo:
No Disponible / Otro tipo
Fecha de publicación:
28/08/2026
Última modificación:
28/08/2026
Descripción
*** Pendiente de traducción *** IGEL OS 12 before 12.9.0, 12.8.3 LTS and IGEL OS 11 before 11.11.150 contain a secure boot bypass vulnerability in the GRUB boot stage that allows physically present attackers to gain unauthorized root access by placing an unsigned empty file named igel.conf on a partition. Attackers can exploit GRUB's fail-open signature verification behavior to drop into an interactive GRUB prompt, then boot the device's own kernel with additional command-line arguments to obtain a root shell with the disk unlocked while leaving TPM PCR values unaltered.
Impacto
Puntuación base 4.0
6.80
Gravedad 4.0
MEDIA
Puntuación base 3.x
6.10
Gravedad 3.x
MEDIA
Referencias a soluciones, herramientas e información
- https://blog.amberwolf.com/blog/2026/august/thin-client-thin-crypto-overview/
- https://kb.igel.com/en/security-safety/current/isn-2026-20-grub-shell-escape-in-igel-os
- https://media.defcon.org/DEF%20CON%2034/DEF%20CON%2034%20presentations/DEF%20CON%2034%20presentations/DEF%20CON%2034%20-%20Darren%20McDonald%20-%20Thin%20Client%20Thin%20Crypto%20-%20Bypassing%20Full-Desk%20Encryption%20Across%20Three%20Major%20Thin%20Clients%20Vendors%20without%20Breaking%20a%20Ci.pdf
- https://www.vulncheck.com/advisories/igel-os-12-11-secure-boot-bypass-via-unsigned-igel-conf-file



