CVE-2025-34298

Estado: AnalizadaAlta (8.7)—

Nagios Log Server versions prior to 2024R1.3.2 contain a privilege escalation vulnerability in the account email-change workflow. A user could set their own email to an invalid value and, due to insufficient validation and authorization checks tied to email identity state, trigger inconsistent account state that granted elevated privileges or bypassed intended access controls.

CVSS

Versión: 4.0
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Puntuación base: 8.7

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.70%
Percentil entre todas las CVEs puntuadas: 52
Fecha de la puntuación: 6/10/2026

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 movement65 %
Impacto principalT1068 Exploitation for Privilege Escalationprivilege escalation75 %
Impacto secundarioT1078 Valid Accountsstealth · persistence · privilege escalation · initial access60 %

Acceso remoto autenticado (PR:L) sin interacción en servicio de red (AV:N/AC:L). Escalada de privilegios por estado inconsistente en flujo de cambio de email (CWE-281). Impactos: elevación de privilegios (VC:H) y acceso con permisos superiores (T1078).

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 Application Developer Guidance

Tecnologías afectadas (1)

Nagios — LOG Server

CWE

CWE-281

Referencias

JSON original (NVD)

Mostrar

{
  "id": "CVE-2025-34298",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-34298",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-10-31T17:40:19.982180Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 8.8,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 2.8
      }
    ],
    "cvssMetricV40": [
      {
        "type": "Secondary",
        "source": "disclosure@vulncheck.com",
        "cvssData": {
          "Safety": "NOT_DEFINED",
          "version": "4.0",
          "Recovery": "NOT_DEFINED",
          "baseScore": 8.7,
          "Automatable": "NOT_DEFINED",
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "exploitMaturity": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "privilegesRequired": "LOW",
          "subIntegrityImpact": "NONE",
          "vulnIntegrityImpact": "HIGH",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "vulnAvailabilityImpact": "HIGH",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "subConfidentialityImpact": "NONE",
          "vulnConfidentialityImpact": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
        }
      }
    ]
  },
  "affected": [
    {
      "source": "disclosure@vulncheck.com",
      "affectedData": [
        {
          "vendor": "Nagios",
          "modules": [
            "Web UI – Account profile / email update workflow"
          ],
          "product": "Log Server",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "2024R1.3.2",
              "versionType": "custom"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2025-10-30T22:15:49.257",
  "references": [
    {
      "url": "https://www.nagios.com/changelog/nagios-log-server-2024r1/",
      "tags": [
        "Release Notes"
      ],
      "source": "disclosure@vulncheck.com"
    },
    {
      "url": "https://www.vulncheck.com/advisories/nagios-log-server-set-email-privilege-escalation",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "disclosure@vulncheck.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "disclosure@vulncheck.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-281"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Nagios Log Server versions prior to 2024R1.3.2 contain a privilege escalation vulnerability in the account email-change workflow. A user could set their own email to an invalid value and, due to insufficient validation and authorization checks tied to email identity state, trigger inconsistent account state that granted elevated privileges or bypassed intended access controls."
    }
  ],
  "lastModified": "2026-06-17T09:13:49.047",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:nagios:log_server:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "87E74637-713C-4DD7-B97E-2F247B7B12B1",
              "versionEndExcluding": "2024"
            },
            {
              "criteria": "cpe:2.3:a:nagios:log_server:2024:r1:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "B93D415C-B2C0-42CE-B9B3-29C29A3DCC16"
            },
            {
              "criteria": "cpe:2.3:a:nagios:log_server:2024:r1.0.1:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "997B64B5-A3F2-4D0E-B05E-CCA76D598C18"
            },
            {
              "criteria": "cpe:2.3:a:nagios:log_server:2024:r1.0.2:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "D20F6746-83DD-49AE-8C3D-AF2FFB47A89E"
            },
            {
              "criteria": "cpe:2.3:a:nagios:log_server:2024:r1.1:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "5EF32AF5-19EA-495A-AB28-F78F33DDEC3F"
            },
            {
              "criteria": "cpe:2.3:a:nagios:log_server:2024:r1.2:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "4C26DE7A-37AA-4570-81C1-2E0C1A9026F7"
            },
            {
              "criteria": "cpe:2.3:a:nagios:log_server:2024:r1.3:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "52C22468-A773-49C8-81AD-9B76C26BFFD1"
            },
            {
              "criteria": "cpe:2.3:a:nagios:log_server:2024:r1.3.1:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "7CEC223A-A3EE-4C51-8B71-E19C73B9215C"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "disclosure@vulncheck.com"
}