Busybox: busybox: arbitrary file modification and privilege escalation via unvalidated tar archive entries
21Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 7epss 0.2%
probabilidad de explotación
0.2%top 94% de las CVE
explotación observada
noninguna fuente lo reporta
A flaw was found in BusyBox. This vulnerability allows an attacker to modify files outside of the intended extraction directory by crafting a malicious tar archive containing unvalidated hardlink or symlink entries. If the tar archive is extracted with elevated privileges, this flaw can lead to privilege escalation, enabling an attacker to gain unauthorized access to critical system files.
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Referencias
https://access.redhat.com/errata/RHSA-2026:13831https://access.redhat.com/security/cve/CVE-2026-26158https://bugzilla.redhat.com/show_bug.cgi?id=2439040https://cert-portal.siemens.com/productcert/html/ssa-253495.htmlhttps://git.busybox.net/busybox/commit/archival?id=3fb6b31c716669e12f75a2accd31bb7685b1a1cbhttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-26158.json