CVE-2026-9787
Quest NetVault Backup NVBULogDaemon Command Injection Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Quest NetVault Backup. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed.
The specific flaw exists within the processing of NVBULogDaemon JSON-RPC messages. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of SYSTEM. Was ZDI-CAN-27625.
CVSS
- Versión: 3.0
- Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Puntuación base: 8.8
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 5.49%
- Percentil entre todas las CVEs puntuadas: 93
- 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 escalation80 %
AV:N/PR:L sin UI requiere acceso remoto con autenticación (T1210). CWE-78 y ejecución de código en contexto SYSTEM conllevan T1059 e escalada a privilegios administrativos (T1068).
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)
CWE
- CWE-78
Referencias
JSON original (NVD)
Mostrar
{
"id": "CVE-2026-9787",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-9787",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"version": "2.0.3",
"timestamp": "2026-06-25T00:00:00+00:00"
}
}
],
"cvssMetricV30": [
{
"type": "Secondary",
"source": "zdi-disclosures@trendmicro.com",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.0",
"baseScore": 8.8,
"attackVector": "NETWORK",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "LOW",
"confidentialityImpact": "HIGH"
},
"impactScore": 5.9,
"exploitabilityScore": 2.8
}
]
},
"affected": [
{
"source": "zdi-disclosures@trendmicro.com",
"affectedData": [
{
"vendor": "Quest",
"product": "NetVault Backup",
"versions": [
{
"status": "affected",
"version": "14.0.0.19"
}
],
"defaultStatus": "unknown"
}
]
}
],
"published": "2026-06-25T00:17:48.963",
"references": [
{
"url": "https://support.quest.com/technical-documents/netvault/14.0.2/release-notes#TOPIC-2338529",
"tags": [
"Release Notes"
],
"source": "zdi-disclosures@trendmicro.com"
},
{
"url": "https://www.zerodayinitiative.com/advisories/ZDI-26-376/",
"tags": [
"Vendor Advisory"
],
"source": "zdi-disclosures@trendmicro.com"
}
],
"vulnStatus": "Analyzed",
"weaknesses": [
{
"type": "Secondary",
"source": "zdi-disclosures@trendmicro.com",
"description": [
{
"lang": "en",
"value": "CWE-78"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Quest NetVault Backup NVBULogDaemon Command Injection Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Quest NetVault Backup. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed.\n\nThe specific flaw exists within the processing of NVBULogDaemon JSON-RPC messages. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of SYSTEM. Was ZDI-CAN-27625."
}
],
"lastModified": "2026-06-26T05:16:32.913",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:quest:netvault_backup:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "B90F1C8A-90F9-4621-8C79-D7BF2F0434DB",
"versionEndExcluding": "14.0.2"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "zdi-disclosures@trendmicro.com"
}