FKIE_CVE-2026-55645
Vulnerability from fkie_nvd - Published: 2026-07-20 17:18 - Updated: 2026-10-24 20:10
Severity
Summary
xrdp is an open source RDP server. Versions 0.10.6 and prior contain a vulnerability concerning the processing of Client Control PDUs. During the RDP connection sequence, the parser does not perform sufficient length validation before reading specific data fields from the network stream. A remote, unauthenticated attacker could potentially exploit this flaw by sending a specially crafted, truncated Client Control PDU. Due to missing bounds checks, the xrdp process may perform out-of-bounds memory reads, which can result in the termination of the service (Denial of Service). However, since xrdp forks a new process for each connection by default, an out-of-bounds read causing a process crash is unlikely to bring down the entire xrdp service.This issue has been fixed in version 0.10.6.1.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| neutrinolabs | xrdp | * |
{
"affected": [
{
"affectedData": [
{
"product": "xrdp",
"vendor": "neutrinolabs",
"versions": [
{
"status": "affected",
"version": "\u003c 0.10.6.1"
}
]
}
],
"source": "security-advisories@github.com"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:neutrinolabs:xrdp:*:*:*:*:*:*:*:*",
"matchCriteriaId": "A994DC5A-6181-45D2-A489-0E409B19A0FE",
"versionEndExcluding": "0.10.6.1",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "xrdp is an open source RDP server. Versions 0.10.6 and prior contain a vulnerability concerning the processing of Client Control PDUs. During the RDP connection sequence, the parser does not perform sufficient length validation before reading specific data fields from the network stream. A remote, unauthenticated attacker could potentially exploit this flaw by sending a specially crafted, truncated Client Control PDU. Due to missing bounds checks, the xrdp process may perform out-of-bounds memory reads, which can result in the termination of the service (Denial of Service). However, since xrdp forks a new process for each connection by default, an out-of-bounds read causing a process crash is unlikely to bring down the entire xrdp service.This issue has been fixed in version 0.10.6.1."
},
{
"lang": "es",
"value": "xrdp es un servidor RDP de c\u00f3digo abierto. Las versiones 0.10.6 y anteriores contienen una vulnerabilidad concerniente al procesamiento de PDUs de Control de Cliente. Durante la secuencia de conexi\u00f3n RDP, el analizador no realiza una validaci\u00f3n de longitud suficiente antes de leer campos de datos espec\u00edficos del flujo de red. Un atacante remoto y no autenticado podr\u00eda potencialmente explotar esta falla enviando una PDU de Control de Cliente truncada y especialmente dise\u00f1ada. Debido a la falta de comprobaciones de l\u00edmites, el proceso xrdp puede realizar lecturas de memoria fuera de l\u00edmites, lo que puede resultar en la terminaci\u00f3n del servicio (Denegaci\u00f3n de Servicio). Sin embargo, dado que xrdp bifurca un nuevo proceso para cada conexi\u00f3n por defecto, es poco probable que una lectura fuera de l\u00edmites que cause un fallo del proceso derribe todo el servicio xrdp. Este problema ha sido solucionado en la versi\u00f3n 0.10.6.1."
}
],
"id": "CVE-2026-55645",
"lastModified": "2026-10-24T20:10:00.137",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 2.5,
"source": "security-advisories@github.com",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-55645",
"options": [
{
"exploitation": "none"
},
{
"automatable": "yes"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-07-21T15:23:55.354517Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-07-20T17:18:07.430",
"references": [
{
"source": "security-advisories@github.com",
"tags": [
"Release Notes"
],
"url": "https://github.com/neutrinolabs/xrdp/releases/tag/v0.10.6.1"
},
{
"source": "security-advisories@github.com",
"tags": [
"Vendor Advisory"
],
"url": "https://github.com/neutrinolabs/xrdp/security/advisories/GHSA-3m4m-h22g-c7xx"
}
],
"sourceIdentifier": "security-advisories@github.com",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-125"
}
],
"source": "security-advisories@github.com",
"type": "Secondary"
}
]
}
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Browse all ATT&CK techniques and the vulnerabilities related to each.
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