CVE-2026-6893
Estado: Pendiente de análisisAlta (7.5)—
A flaw was found in dracut. A remote attacker on the adjacent network can exploit this vulnerability by providing specially crafted DHCP (Dynamic Host Configuration Protocol) options, such as a malicious hostname, to a system using dracut's legacy DHCP path. These options are improperly handled and written into temporary shell scripts without proper escaping, leading to command injection. This allows the attacker to achieve root code execution within the initramfs, potentially compromising the system's boot and network behavior.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Puntuación base: 7.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 3.14%
- Percentil entre todas las CVEs puntuadas: 87
- Fecha de la puntuación: 5/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
🎯 Técnicas ATT&CK
Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.
- Explotación
T1210Exploitation of Remote Serviceslateral movement92 % - Impacto principal
T1059Command and Scripting Interpreterexecution95 % - Impacto secundario
T1068Exploitation for Privilege Escalationprivilege escalation88 %
Acceso red adyacente (AV:A), DHCP explotado sin privilegios previos. Command injection en scripts de shell logra ejecución remota de código y privilegios root en initramfs.
Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.
🛡️ Mitigaciones ATT&CK que cubren estas técnicas
Tecnologías afectadas (1)
⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.
CWE
- CWE-78
- CWE-78
Referencias
- https://access.redhat.com/errata/RHSA-2026:26532
- https://access.redhat.com/errata/RHSA-2026:26533
- https://access.redhat.com/errata/RHSA-2026:26534
- https://access.redhat.com/errata/RHSA-2026:26713
- https://access.redhat.com/errata/RHSA-2026:57580
- https://access.redhat.com/errata/RHSA-2026:57772
- https://access.redhat.com/errata/RHSA-2026:57775
- https://access.redhat.com/errata/RHSA-2026:57785
- https://access.redhat.com/errata/RHSA-2026:61252
- https://access.redhat.com/errata/RHSA-2026:62269
- https://access.redhat.com/errata/RHSA-2026:62409
- https://access.redhat.com/errata/RHSA-2026:62549
- https://access.redhat.com/errata/RHSA-2026:63044
- https://access.redhat.com/errata/RHSA-2026:65839
- https://access.redhat.com/errata/RHSA-2026:65851
- https://access.redhat.com/errata/RHSA-2026:67857
- https://access.redhat.com/errata/RHSA-2026:69118
- https://access.redhat.com/errata/RHSA-2026:69119
- https://access.redhat.com/errata/RHSA-2026:70586
- https://access.redhat.com/errata/RHSA-2026:70615
- https://access.redhat.com/errata/RHSA-2026:74499
- https://access.redhat.com/security/cve/CVE-2026-6893
- https://bugzilla.redhat.com/show_bug.cgi?id=2459963
- https://access.redhat.com/errata/RHSA-2026:26532
- https://access.redhat.com/errata/RHSA-2026:26533
- https://access.redhat.com/errata/RHSA-2026:26534
- https://access.redhat.com/errata/RHSA-2026:26713
- https://access.redhat.com/errata/RHSA-2026:57580
- https://access.redhat.com/errata/RHSA-2026:57772
- https://access.redhat.com/errata/RHSA-2026:57775
- https://access.redhat.com/errata/RHSA-2026:57785
- https://access.redhat.com/errata/RHSA-2026:61252
- https://access.redhat.com/errata/RHSA-2026:62269
- https://access.redhat.com/errata/RHSA-2026:62409
- https://access.redhat.com/errata/RHSA-2026:62549
- https://access.redhat.com/errata/RHSA-2026:63044
- https://access.redhat.com/errata/RHSA-2026:65839
- https://access.redhat.com/errata/RHSA-2026:65851
- https://access.redhat.com/security/cve/CVE-2026-6893
- https://bugzilla.redhat.com/show_bug.cgi?id=2459963
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-6893.json
JSON original (NVD)
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