CVE-2026-57098
Improper verification of cryptographic signature in Windows RDP Client allows an unauthorized attacker to disclose information over a network.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Puntuación base: 7.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.64%
- Percentil entre todas las CVEs puntuadas: 49
- 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).
🎯 Técnicas ATT&CK
Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.
- Explotación
T1190Exploit Public-Facing Applicationinitial access90 % - Impacto principal
T1553.006Code Signing Policy Modificationdefense impairment75 %
Vector CVSS AV:N/PR:N/UI:N indica explotación remota sin privilegios (T1190). CWE-347 (verificación criptográfica impropia) en RDP Client permite suplantación de servidor, típico de T1553.006 (trusted root certificate abuse).
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-347
Referencias
JSON original (NVD)
Mostrar
{
"id": "CVE-2026-57098",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-57098",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "yes"
},
{
"technicalImpact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2026-09-08T19:52:37.206052Z"
}
}
],
"cvssMetricV31": [
{
"type": "Secondary",
"source": "secure@microsoft.com",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 7.5,
"attackVector": "NETWORK",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "NONE",
"privilegesRequired": "NONE",
"confidentialityImpact": "HIGH"
},
"impactScore": 3.6,
"exploitabilityScore": 3.9
}
]
},
"affected": [
{
"source": "secure@microsoft.com",
"affectedData": [
{
"vendor": "Microsoft",
"product": "Remote Desktop client for Windows Desktop",
"versions": [
{
"status": "affected",
"version": "1.2.0.0",
"lessThan": "1.2.7279.0",
"versionType": "custom"
}
]
}
]
}
],
"published": "2026-09-08T18:17:42.927",
"references": [
{
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-57098",
"tags": [
"Patch",
"Vendor Advisory"
],
"source": "secure@microsoft.com"
}
],
"vulnStatus": "Analyzed",
"weaknesses": [
{
"type": "Secondary",
"source": "secure@microsoft.com",
"description": [
{
"lang": "en",
"value": "CWE-347"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Improper verification of cryptographic signature in Windows RDP Client allows an unauthorized attacker to disclose information over a network."
}
],
"lastModified": "2026-09-16T20:33:06.320",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:microsoft:remote_desktop_client:*:*:*:*:*:windows:*:*",
"vulnerable": true,
"matchCriteriaId": "A05FB871-0537-44CD-B3C3-1180D769E20E",
"versionEndExcluding": "1.2.7279"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "secure@microsoft.com"
}