CVE-2026-40226
Estado: AnalizadaMedia (6.4)—
In nspawn in systemd 233 through 259 before 260, an escape-to-host action can occur via a crafted optional config file.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
- Puntuación base: 6.4
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.09%
- Percentil entre todas las CVEs puntuadas: 1
- Fecha de la puntuación: 3/10/2026
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).
Tecnologías afectadas (1)
CWE
- CWE-348
Referencias
JSON original (NVD)
Mostrar
{
"id": "CVE-2026-40226",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-40226",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "poc"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"version": "2.0.3",
"timestamp": "2026-04-14T14:47:51.552925Z"
}
}
],
"cvssMetricV31": [
{
"type": "Secondary",
"source": "cve@mitre.org",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 6.4,
"attackVector": "LOCAL",
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "NONE",
"attackComplexity": "HIGH",
"availabilityImpact": "HIGH",
"privilegesRequired": "HIGH",
"confidentialityImpact": "HIGH"
},
"impactScore": 5.9,
"exploitabilityScore": 0.5
}
]
},
"affected": [
{
"source": "cve@mitre.org",
"affectedData": [
{
"vendor": "systemd",
"product": "systemd",
"versions": [
{
"status": "affected",
"version": "233",
"lessThan": "260",
"versionType": "custom"
}
],
"defaultStatus": "unaffected"
}
]
}
],
"published": "2026-04-10T16:16:33.447",
"references": [
{
"url": "https://github.com/systemd/systemd/security/advisories/GHSA-9mj4-rrc3-gjcx",
"tags": [
"Vendor Advisory"
],
"source": "cve@mitre.org"
}
],
"vulnStatus": "Analyzed",
"weaknesses": [
{
"type": "Secondary",
"source": "cve@mitre.org",
"description": [
{
"lang": "en",
"value": "CWE-348"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In nspawn in systemd 233 through 259 before 260, an escape-to-host action can occur via a crafted optional config file."
}
],
"lastModified": "2026-06-17T10:44:53.067",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:systemd_project:systemd:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "29AAD5A6-4198-4D58-9FBB-FE35AFADA909",
"versionEndExcluding": "257.12",
"versionStartIncluding": "233"
},
{
"criteria": "cpe:2.3:a:systemd_project:systemd:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "CDEB656F-DF55-418A-A250-E414B7DFF975",
"versionEndExcluding": "258.6",
"versionStartIncluding": "258"
},
{
"criteria": "cpe:2.3:a:systemd_project:systemd:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "2D35ABE2-6825-4820-96FA-37601DA85848",
"versionEndExcluding": "259.4",
"versionStartIncluding": "259"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "cve@mitre.org"
}