CVE-2026-15816
Estado: Pendiente de análisisAlta (7.5)—
A flaw was found in dracut. The die() error-handling function writes its message into a shell script under the initramfs emergency-hook directory without properly shell-quoting it. When the message contains data derived from the DHCP ROOT_PATH option, an attacker on the adjacent network who controls a rogue DHCP server can inject a command-substitution sequence that executes as root the next time dracut sources its emergency hook scripts during standard boot-failure handling.
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: 0.37%
- Percentil entre todas las CVEs puntuadas: 29
- 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 movement85 % - Impacto principal
T1059Command and Scripting Interpreterexecution90 % - Impacto secundario
T1068Exploitation for Privilege Escalationprivilege escalation75 %
Vulnerabilidad de inyección de comandos (CWE-78) en dracut explotable desde red adyacente (AV:A) sin privilegios previos ni interacción del usuario. Permite inyectar secuencias de sustitución de comandos en scripts de shell que se ejecutan como root durante el arranque fallido.
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
Referencias
- https://access.redhat.com/errata/RHSA-2026:54571
- https://access.redhat.com/errata/RHSA-2026:54575
- https://access.redhat.com/errata/RHSA-2026:54576
- 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-2026:60440
- https://access.redhat.com/errata/RHSA-2026:60445
- 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-2026:63041
- 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-2026:66357
- 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-2026-15816
- https://bugzilla.redhat.com/show_bug.cgi?id=2459963
- https://bugzilla.redhat.com/show_bug.cgi?id=2500889
- https://github.com/dracutdevs/dracut/blob/master/modules.d/40network/netroot.sh
- https://github.com/dracutdevs/dracut/blob/master/modules.d/99base/dracut-lib.sh
JSON original (NVD)
Mostrar
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{
"url": "https://access.redhat.com/errata/RHSA-2026:69119",
"source": "secalert@redhat.com"
},
{
"url": "https://access.redhat.com/errata/RHSA-2026:70586",
"source": "secalert@redhat.com"
},
{
"url": "https://access.redhat.com/errata/RHSA-2026:70615",
"source": "secalert@redhat.com"
},
{
"url": "https://access.redhat.com/errata/RHSA-2026:74499",
"source": "secalert@redhat.com"
},
{
"url": "https://access.redhat.com/security/cve/CVE-2026-15816",
"source": "secalert@redhat.com"
},
{
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2459963",
"source": "secalert@redhat.com"
},
{
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2500889",
"source": "secalert@redhat.com"
},
{
"url": "https://github.com/dracutdevs/dracut/blob/master/modules.d/40network/netroot.sh",
"source": "secalert@redhat.com"
},
{
"url": "https://github.com/dracutdevs/dracut/blob/master/modules.d/99base/dracut-lib.sh",
"source": "secalert@redhat.com"
}
],
"vulnStatus": "Awaiting Analysis",
"weaknesses": [
{
"type": "Secondary",
"source": "secalert@redhat.com",
"description": [
{
"lang": "en",
"value": "CWE-78"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A flaw was found in dracut. The die() error-handling function writes its message into a shell script under the initramfs emergency-hook directory without properly shell-quoting it. When the message contains data derived from the DHCP ROOT_PATH option, an attacker on the adjacent network who controls a rogue DHCP server can inject a command-substitution sequence that executes as root the next time dracut sources its emergency hook scripts during standard boot-failure handling."
}
],
"lastModified": "2026-10-02T00:17:01.357",
"sourceIdentifier": "secalert@redhat.com"
}