CVE-2025-0624
Full vulnerability record from the local CVENow database.
Description
A flaw was found in grub2. During the network boot process, when trying to search for the configuration file, grub copies data from a user controlled environment variable into an internal buffer using the grub_strcpy() function. During this step, it fails to consider the environment variable length when allocating the internal buffer, resulting in an out-of-bounds write. If correctly exploited, this issue may result in remote code execution through the same network segment grub is searching for the boot information, which can be used to by-pass secure boot protections.
Severity
HIGH
CVSS score
7.6
(v3.1)
Vulnerability status
Deferred
Source identifier
Published
2025-02-19 19:15:15.120000
Last modified
2026-11-04 22:17:26.027000
View original CVE JSON
{
"id": "CVE-2025-0624",
"sourceIdentifier": "[email protected]",
"published": "2025-02-19T19:15:15.120",
"lastModified": "2026-11-04T22:17:26.027",
"vulnStatus": "Deferred",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "A flaw was found in grub2. During the network boot process, when trying to search for the configuration file, grub copies data from a user controlled environment variable into an internal buffer using the grub_strcpy() function. During this step, it fails to consider the environment variable length when allocating the internal buffer, resulting in an out-of-bounds write. If correctly exploited, this issue may result in remote code execution through the same network segment grub is searching for the boot information, which can be used to by-pass secure boot protections."
},
{
"lang": "es",
"value": "Se encontró una falla en grub2. Durante el proceso de arranque de red, al intentar buscar el archivo de configuración, grub copia datos de una variable de entorno controlada por el usuario en un búfer interno mediante la función grub_strcpy(). Durante este paso, no tiene en cuenta la longitud de la variable de entorno al asignar el búfer interno, lo que da como resultado una escritura fuera de los límites. Si se explota correctamente, este problema puede dar como resultado la ejecución de código remoto a través del mismo segmento de red en el que grub está buscando la información de arranque, que se puede utilizar para eludir las protecciones de arranque seguro."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
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"collectionURL": "https://www.gnu.org/software/grub/",
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"metrics": {
"cvssMetricV31": [
{
"source": "[email protected]",
"type": "Secondary",
"cvssData": {
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"vectorString": "CVSS:3.1/AV:A/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H",
"baseScore": 7.6,
"baseSeverity": "HIGH",
"attackVector": "ADJACENT_NETWORK",
"attackComplexity": "HIGH",
"privilegesRequired": "HIGH",
"userInteraction": "NONE",
"scope": "CHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"availabilityImpact": "HIGH"
},
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}
],
"ssvcV203": [
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"ssvcData": {
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"id": "CVE-2025-0624",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
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{
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}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
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"weaknesses": [
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"source": "[email protected]",
"type": "Secondary",
"description": [
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"lang": "en",
"value": "CWE-787"
}
]
}
],
"references": [
{
"url": "https://access.redhat.com/errata/RHSA-2025:2521",
"source": "[email protected]"
},
{
"url": "https://access.redhat.com/errata/RHSA-2025:2653",
"source": "[email protected]"
},
{
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"source": "[email protected]"
},
{
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"source": "[email protected]"
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{
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{
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{
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{
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{
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{
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},
{
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},
{
"url": "https://access.redhat.com/errata/RHSA-2025:3577",
"source": "[email protected]"
},
{
"url": "https://access.redhat.com/errata/RHSA-2025:3780",
"source": "[email protected]"
},
{
"url": "https://access.redhat.com/errata/RHSA-2025:4422",
"source": "[email protected]"
},
{
"url": "https://access.redhat.com/errata/RHSA-2025:7702",
"source": "[email protected]"
},
{
"url": "https://access.redhat.com/security/cve/CVE-2025-0624",
"source": "[email protected]"
},
{
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2346112",
"source": "[email protected]"
},
{
"url": "https://security.netapp.com/advisory/ntap-20250516-0006/",
"source": "af854a3a-2127-422b-91ae-364da2661108"
}
]
}