FKIE_CVE-2026-4374

Vulnerability from fkie_nvd - Published: 2026-04-01 02:16 - Updated: 2026-06-17 19:18
Severity
9.1 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Summary
Improper Restriction of XML External Entity Reference vulnerability in RTI Connext Professional (Cloud Discovery Service, Recording Service, Routing Service, Queueing Service, Observability Collector) allows Serialized Data External Linking, Data Serialization External Entities Blowup.<p>This issue affects Connext Professional: from 7.4.0 before 7.7.0, from 7.1.0 before 7.3.1.1, from 6.1.0 before 6.1.2.34, from 6.0.0 before 6.0.*, from 5.3.0 before 5.3.*.</p>
References
3f572a00-62e2-4423-959a-7ea25eff1638https://www.rti.com/vulnerabilities/#cve-2026-4374Vendor Advisory
Impacted products
Vendor Product Version
rti connext_professional *
rti connext_professional *
rti connext_professional *
rti connext_professional *
rti connext_professional *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "modules": [
            "Cloud Discovery Service",
            "Recording Service",
            "Routing Service",
            "Queueing Service",
            "Observability Collector"
          ],
          "packageName": "connext_professional",
          "packageURL": "pkg:generic/connext_professional",
          "product": "Connext Professional",
          "vendor": "RTI",
          "versions": [
            {
              "lessThan": "7.7.0",
              "status": "affected",
              "version": "7.4.0",
              "versionType": "custom"
            },
            {
              "lessThan": "7.3.1.1",
              "status": "affected",
              "version": "7.1.0",
              "versionType": "custom"
            },
            {
              "lessThan": "6.1.2.34",
              "status": "affected",
              "version": "6.1.0",
              "versionType": "custom"
            },
            {
              "lessThan": "6.0.*",
              "status": "affected",
              "version": "6.0.0",
              "versionType": "custom"
            },
            {
              "lessThan": "5.3.*",
              "status": "affected",
              "version": "5.3.0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "3f572a00-62e2-4423-959a-7ea25eff1638"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:rti:connext_professional:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "F8B1FE0A-A2E0-45AA-9ED2-CED9BDA02047",
              "versionEndIncluding": "5.3.1.45",
              "versionStartIncluding": "5.3.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:rti:connext_professional:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "8369CEAE-4767-4910-AD55-3C6E8898EE5F",
              "versionEndIncluding": "6.0.1.40",
              "versionStartIncluding": "6.0.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:rti:connext_professional:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "2042782E-93AB-4D92-9DB0-3377557B5B46",
              "versionEndIncluding": "6.1.2.27",
              "versionStartIncluding": "6.1.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:rti:connext_professional:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "9F77FCD6-D5AC-46DF-99BF-D9E30919B5E4",
              "versionEndExcluding": "7.3.1.1",
              "versionStartIncluding": "7.0.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:rti:connext_professional:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "DF87EB0F-A1CD-40D1-96F0-53D964E34BFC",
              "versionEndExcluding": "7.7.0",
              "versionStartIncluding": "7.4.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Improper Restriction of XML External Entity Reference vulnerability in RTI Connext Professional (Cloud Discovery Service, Recording Service, Routing Service, Queueing Service, Observability Collector) allows Serialized Data External Linking, Data Serialization External Entities Blowup.\u003cp\u003eThis issue affects Connext Professional: from 7.4.0 before 7.7.0, from 7.1.0 before 7.3.1.1, from 6.1.0 before 6.1.2.34, from 6.0.0 before 6.0.*, from 5.3.0 before 5.3.*.\u003c/p\u003e"
    },
    {
      "lang": "es",
      "value": "Vulnerabilidad de restricci\u00f3n incorrecta de referencia a entidad externa XML en RTI Connext Professional (Routing Service, Observability Collector, Recording Service, Queueing Service, Cloud Discovery Service) permite el enlace externo de datos serializados, la serializaci\u00f3n de datos..."
    }
  ],
  "id": "CVE-2026-4374",
  "lastModified": "2026-06-17T19:18:09.953",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.1,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.2,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/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",
          "version": "4.0",
          "vulnAvailabilityImpact": "HIGH",
          "vulnConfidentialityImpact": "HIGH",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "3f572a00-62e2-4423-959a-7ea25eff1638",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-4374",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-04-01T14:23:31.865417Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-04-01T02:16:03.540",
  "references": [
    {
      "source": "3f572a00-62e2-4423-959a-7ea25eff1638",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://www.rti.com/vulnerabilities/#cve-2026-4374"
    }
  ],
  "sourceIdentifier": "3f572a00-62e2-4423-959a-7ea25eff1638",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-611"
        }
      ],
      "source": "3f572a00-62e2-4423-959a-7ea25eff1638",
      "type": "Secondary"
    }
  ]
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.