CVE-2025-12485

Estado: AnalizadaAlta (8.8)—

Improper privilege management during pre-MFA cookie handling in Devolutions Server allows a low-privileged authenticated user to impersonate another account by replaying the pre-MFA cookie.This does not bypass the target account MFA verification step.

This issue affects the following versions :

Devolutions Server 2025.2.15.0 and earlier

Detalles técnicos trazas, registros y código del informe original

  *  Devolutions Server 2025.3.2.0 through 2025.3.5.0
  *

CVSS

Versión: 3.1
Vector: CVSS:3.1/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: 0.59%
Percentil entre todas las CVEs puntuadas: 46
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.

ExplotaciónT1210 Exploitation of Remote Serviceslateral movement75 %
Impacto principalT1078.002 Domain Accountsstealth · persistence · privilege escalation · initial access85 %
Impacto secundarioT1068 Exploitation for Privilege Escalationprivilege escalation70 %

Acceso autenticado remoto (PR:L) a servicio Devolutions Server; el atacante reutiliza cookies pre-MFA para suplantar cuentas. Impactos: obtención de acceso válido (T1078.002) y potencial escalada si la cuenta suplantada tiene mayores privilegios (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

Threat Intelligence Program Privileged Account Management Application Isolation and Sandboxing Exploit Protection Update Software Vulnerability Scanning

Tecnologías afectadas (1)

Devolutions — Devolutions Server

CWE

CWE-269

Referencias

https://devolutions.net/security/advisories/DEVO-2025-0016

JSON original (NVD)

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  "id": "CVE-2025-12485",
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          "options": [
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          "userInteraction": "NONE",
          "attackComplexity": "LOW",
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          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
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        "impactScore": 5.9,
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          "product": "Server",
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              "versionType": "custom",
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            },
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      "tags": [
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      "value": "Improper privilege management during pre-MFA cookie handling in Devolutions Server allows a low-privileged authenticated user to impersonate another account by replaying the pre-MFA cookie.This does not bypass the target account MFA verification step.\n\n\n\n\n\nThis issue affects the following versions :\n\n  *  Devolutions Server 2025.3.2.0 through 2025.3.5.0\n  *  \n\nDevolutions Server 2025.2.15.0 and earlier"
    }
  ],
  "lastModified": "2026-06-17T08:32:27.960",
  "configurations": [
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