CVE-2026-110925

Estado: Pendiente de análisisMedia (5.4)—

Gravedad5.4Media · CVSS 3.1

Probabilidad de explotación0.24 %mayor que el 14 % de las CVE

Explotación activaNono figura en el catálogo de CISA

Exploit públicoNo conocidosin código público localizado

Se ha detectado un fallo en OpenSSH. Un nombre de usuario introducido en la línea de comandos de ssh puede seguir conteniendo '$' o una barra invertida que no esté al final. Cuando una configuración expande %u dentro de ProxyCommand o de Match exec, esos caracteres se pasan al intérprete de comandos (shell).

Traducción automática del texto original de NVD (en inglés).

CVSS

Puntuación base: 5.4
Versión: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.24 %
Percentil entre todas las CVEs puntuadas: 14
Fecha de la puntuación: 20/10/2026

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.

ExplotaciónT1203 Exploitation for Client Executionexecution85 %
Impacto principalT1059 Command and Scripting Interpreterexecution75 %

El vector CVSS indica UI:R, así que la explotación requiere interacción del usuario (T1203). Los caracteres '$' o barras invertidas llegan al shell vía %u en ProxyCommand o Match exec (CWE-78).

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

Restrict Web-Based Content Privileged Account Management Limit Software Installation Execution Prevention Behavior Prevention on Endpoint Disable or Remove Feature or Program

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Openbsd — Openssh^AI

CWE

CWE-78

Referencias

Mostrar las 3 referencias

JSON original (NVD)

Mostrar

{
  "id": "CVE-2026-110925",
  "cveTags": [],
  "metrics": {
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      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-110925",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-10-15T15:00:23.014011Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "secalert@redhat.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.4,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 2.5,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
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      "affectedData": [
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          "vendor": "Red Hat",
          "product": "Red Hat Hardened Images",
          "versions": [
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              "status": "unaffected",
              "version": "10.5p1-1.2.hum1",
              "lessThan": "*",
              "versionType": "rpm"
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          ],
          "packageName": "openssh-main",
          "collectionURL": "https://catalog.redhat.com/software/containers/",
          "defaultStatus": "affected"
        },
        {
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          "vendor": "Red Hat",
          "product": "Red Hat Enterprise Linux 10",
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          "vendor": "Red Hat",
          "product": "Red Hat Enterprise Linux 6",
          "packageName": "openssh",
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          "product": "Red Hat Enterprise Linux 7",
          "packageName": "openssh",
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          "defaultStatus": "unaffected"
        },
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          "cpes": [
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          "vendor": "Red Hat",
          "product": "Red Hat Enterprise Linux 8",
          "packageName": "openssh",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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          "vendor": "Red Hat",
          "product": "Red Hat Enterprise Linux 9",
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          "defaultStatus": "unaffected"
        },
        {
          "cpes": [
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          ],
          "vendor": "Red Hat",
          "product": "Red Hat Hardened Images",
          "packageName": "openshell",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:openshift:4"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat OpenShift Container Platform 4",
          "packageName": "openshift/ose-rhel-coreos-8",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected"
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          "vendor": "Red Hat",
          "product": "Red Hat OpenShift Container Platform 4",
          "packageName": "openshift/ose-rhel-coreos-9",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-10-15T06:17:01.243",
  "references": [
    {
      "url": "https://access.redhat.com/errata/RHSA-2026:82247",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://access.redhat.com/security/cve/CVE-2026-110925",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2553034",
      "source": "secalert@redhat.com"
    }
  ],
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "secalert@redhat.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-78"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A flaw was found in OpenSSH. A username entered on the ssh command line can still contain '$' or a non-trailing backslash. When a configuration expands %u inside ProxyCommand or Match exec, those characters are passed into the shell."
    }
  ],
  "lastModified": "2026-10-19T22:17:03.487",
  "sourceIdentifier": "secalert@redhat.com"
}