{
  "$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
  "affected_systems": [
    {
      "description": "Unified Communications Manager versions 15 ant\u00e9rieures \u00e0 15SU5 (disponible en Septembre 2026) or COP1",
      "product": {
        "name": "Unified Communications Manager",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
    },
    {
      "description": "Unified Communications Manager versions 14 ant\u00e9rieures \u00e0 14SU6",
      "product": {
        "name": "Unified Communications Manager",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
    },
    {
      "description": "Unified Communications Manager Session Management Edition versions 15 ant\u00e9rieures \u00e0 15SU5 (disponible en Septembre 2026) ou COP1",
      "product": {
        "name": "Unified Communications Manager Session Management Edition",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
    },
    {
      "description": "Unified Communications Manager Session Management Edition versions 14 ant\u00e9rieures \u00e0 14SU6",
      "product": {
        "name": "Unified Communications Manager Session Management Edition",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
    }
  ],
  "affected_systems_content": "",
  "content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
  "cves": [
    {
      "name": "CVE-2026-20230",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-20230"
    }
  ],
  "initial_release_date": "2026-06-04T00:00:00",
  "last_revision_date": "2026-06-04T00:00:00",
  "links": [],
  "reference": "CERTFR-2026-AVI-0689",
  "revisions": [
    {
      "description": "Version initiale",
      "revision_date": "2026-06-04T00:00:00.000000"
    }
  ],
  "risks": [
    {
      "description": "Falsification de requ\u00eates c\u00f4t\u00e9 serveur (SSRF)"
    }
  ],
  "summary": "Une vuln\u00e9rabilit\u00e9 a \u00e9t\u00e9 d\u00e9couverte dans les produits Cisco. Elle permet \u00e0 un attaquant de provoquer une falsification de requ\u00eates c\u00f4t\u00e9 serveur (SSRF).",
  "title": "Vuln\u00e9rabilit\u00e9 dans les produits Cisco",
  "vendor_advisories": [
    {
      "published_at": "2026-06-03",
      "title": "Bulletin de s\u00e9curit\u00e9 Cisco cisco-sa-cucm-ssrf-cXPnHcW",
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cucm-ssrf-cXPnHcW"
    }
  ]
}

{
  "document": {
    "acknowledgments": [
      {
        "summary": "Cisco would like to thank an independent security researcher working with SSD Secure Disclosure for reporting this vulnerability."
      }
    ],
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "notes": [
      {
        "category": "summary",
        "text": "A vulnerability in Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME) could allow an unauthenticated, remote attacker to conduct server-side request forgery (SSRF) attacks through an affected device.\r\n\r\nThis vulnerability is due to improper input validation for specific HTTP requests. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. A successful exploit could allow the attacker to write files to the underlying operating system that could be used later to elevate to root.\r\n\r\nNote: Cisco has assigned this security advisory a Security Impact Rating (SIR) of Critical rather than High as the score indicates. The reason is that exploitation of this vulnerability could result in an attacker elevating privileges to root.\r\n\r\nNote: To exploit this vulnerability, the WebDialer service must be enabled. WebDialer is disabled by default.\r\n\r\nCisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.\r\n\r\n",
        "title": "Summary"
      },
      {
        "category": "general",
        "text": "This vulnerability affects Cisco Unified CM and Unified CM SME if they have the WebDialer service enabled.\r\n\r\nFor information about which Cisco software releases are vulnerable, see the Fixed Software [\"#fs\"] section of this advisory.\r\n\r\nDetermine Whether WebDialer Is Enabled\r\n\r\nTo determine whether WebDialer is enabled, complete the following steps:\r\n\r\nLog in to the Cisco Unified CM Administration interface.\r\nFrom the Navigation menu, choose Cisco Unified Serviceability and click Go.\r\nFrom the Tools menu, choose Control Center - Feature Services.\r\nIn the CTI Services section of the page, check whether the current status of the Cisco WebDialer Web Service is Started or Not Running.\r\n\r\nIf the status is Started, WebDialer is enabled.",
        "title": "Vulnerable Products"
      },
      {
        "category": "general",
        "text": "Only products listed in the Vulnerable Products [\"#vp\"] section of this advisory are known to be affected by this vulnerability.",
        "title": "Products Confirmed Not Vulnerable"
      },
      {
        "category": "general",
        "text": "There are no workarounds that address this vulnerability. However, as a mitigation, administrators may disable the WebDialer service until a patch can be applied.\r\n\r\nTo disable WebDialer, complete the following steps:\r\n\r\nLog in to the Cisco Unified CM Administration interface.\r\nFrom the Navigation menu, choose Cisco Unified Serviceability and click Go.\r\nFrom the Tools menu, choose Service Activation.\r\nIn the CTI Services section of the page, uncheck the Cisco WebDialer Web Service check box and click Save.\r\n\r\nWhile this mitigation has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.",
        "title": "Workarounds"
      },
      {
        "category": "general",
        "text": "Cisco considers any workarounds and mitigations (if applicable) to be temporary solutions until an upgrade to a fixed software release is available. To fully remediate this vulnerability and avoid future exposure as described in this advisory, Cisco strongly recommends that customers upgrade to the fixed software indicated in this advisory.\r\n      Fixed Releases\r\nIn the following table, the left column lists Cisco software releases. The right column indicates whether a release is affected by the vulnerability that is described in this advisory and the first release that includes the fix for this vulnerability. Customers are advised to upgrade to an appropriate fixed software release [\"https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes\"] as indicated in this section.\r\n        Cisco Unified CM and Unified CM SME Release  First Fixed Release          14  14SU6      15  15SU5 (Sep 2026) or COP1\r\n1. Patches are version-specific. Consult the README attached to the patch for details.\r\nThe Cisco Product Security Incident Response Team (PSIRT) validates only the affected and fixed release information that is documented in this advisory.",
        "title": "Fixed Software"
      },
      {
        "category": "general",
        "text": "To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy [\"http://www.cisco.com/web/about/security/psirt/security_vulnerability_policy.html\"]. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.",
        "title": "Vulnerability Policy"
      },
      {
        "category": "general",
        "text": "The Cisco PSIRT is aware that proof-of-concept exploit code is available for the vulnerability that is described in this advisory.\r\n\r\nIn June 2026, the Cisco PSIRT became aware of active exploitation of this vulnerability. Cisco continues to strongly recommend that customers upgrade to a fixed software release to remediate this vulnerability.",
        "title": "Exploitation and Public Announcements"
      },
      {
        "category": "general",
        "text": "Cisco would like to thank an independent security researcher working with SSD Secure Disclosure for reporting this vulnerability.",
        "title": "Source"
      },
      {
        "category": "legal_disclaimer",
        "text": "SOFTWARE DOWNLOADS AND TECHNICAL SUPPORT\r\n\r\nThe Cisco Support and Downloads [\"https://www.cisco.com/c/en/us/support/index.html\"] page on Cisco.com provides information about licensing and downloads. This page can also display customer device support coverage for customers who use the My Devices tool. Please note that customers may download only software that was procured from Cisco directly or through a Cisco authorized reseller or partner and for which the license is still valid.\r\n\r\nCustomers who purchase directly from Cisco but do not hold a Cisco service contract and customers who make purchases through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should obtain upgrades by contacting the Cisco Technical Assistance Center (TAC) [\"https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html\"]. Customers should have the product serial number available and be prepared to provide the URL of this advisory as evidence of entitlement to a free upgrade.\r\n\r\nWhen considering software upgrades [\"https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes\"], customers are advised to regularly consult the advisories [\"https://www.cisco.com/go/psirt\"] for the relevant Cisco products to determine exposure and a complete upgrade solution. In all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) [\"https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html\"] or their contracted maintenance providers.\r\nLEGAL DISCLAIMER DETAILS\r\n\r\nCISCO DOES NOT MAKE ANY EXPRESS OR IMPLIED GUARANTEES OR WARRANTIES OF ANY KIND, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. WITHOUT LIMITING THE GENERALITY OF THE FOREGOING, CISCO DOES NOT GUARANTEE THE ACCURACY OR COMPLETENESS OF THIS INFORMATION. THIS DOCUMENT IS PROVIDED ON AN \"AS IS\" BASIS. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.\r\n\r\nCopies or summaries of the information contained in this Security Advisory may lack important information or contain factual errors. Customers are advised to visit the Cisco Security Advisories [\"https://www.cisco.com/go/psirt\"] page for the most recent version of this Security Advisory. The Cisco Product Security Incident Response Team (PSIRT) assesses only the affected and fixed release information that is documented in this advisory. See the Cisco Security Vulnerability Policy [\"https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes\"] for more information.",
        "title": "Legal Disclaimer"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "psirt@cisco.com",
      "issuing_authority": "Cisco PSIRT",
      "name": "Cisco",
      "namespace": "https://wwww.cisco.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "Cisco Unified Communications Manager Server-Side Request Forgery Vulnerability",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cucm-ssrf-cXPnHcW"
      },
      {
        "category": "external",
        "summary": "Cisco Security Vulnerability Policy",
        "url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html"
      },
      {
        "category": "external",
        "summary": "fixed software release",
        "url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes"
      },
      {
        "category": "external",
        "summary": "Security Vulnerability Policy",
        "url": "http://www.cisco.com/web/about/security/psirt/security_vulnerability_policy.html"
      },
      {
        "category": "external",
        "summary": "Cisco Support and Downloads",
        "url": "https://www.cisco.com/c/en/us/support/index.html"
      },
      {
        "category": "external",
        "summary": "Cisco Technical Assistance Center (TAC)",
        "url": "https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html"
      },
      {
        "category": "external",
        "summary": "the advisories",
        "url": "https://www.cisco.com/go/psirt"
      }
    ],
    "title": "Cisco Unified Communications Manager Server-Side Request Forgery Vulnerability",
    "tracking": {
      "current_release_date": "2026-07-01T15:10:08+00:00",
      "generator": {
        "date": "2026-07-01T15:10:11+00:00",
        "engine": {
          "name": "TVCE"
        }
      },
      "id": "cisco-sa-cucm-ssrf-cXPnHcW",
      "initial_release_date": "2026-06-03T16:00:00+00:00",
      "revision_history": [
        {
          "date": "2026-06-03T15:53:59+00:00",
          "number": "1.0.0",
          "summary": "Initial public release."
        },
        {
          "date": "2026-07-01T15:10:08+00:00",
          "number": "1.1.0",
          "summary": "Added information about active exploitation."
        }
      ],
      "status": "final",
      "version": "1.1.0"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_family",
            "name": "Cisco Unified Communications Manager",
            "product": {
              "name": "Cisco Unified Communications Manager ",
              "product_id": "CSAFPID-88444"
            }
          }
        ],
        "category": "vendor",
        "name": "Cisco"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-20230",
      "ids": [
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCws67331"
        }
      ],
      "notes": [
        {
          "category": "other",
          "text": "Complete.",
          "title": "Affected Product Comprehensiveness"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-88444"
        ]
      },
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "Cisco has released software updates that address this vulnerability.",
          "product_ids": [
            "CSAFPID-88444"
          ],
          "url": "https://software.cisco.com"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 8.6,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-88444"
          ]
        }
      ],
      "title": "Cisco Unified Communications Manager Server-Side Request Forgery Vulnerability"
    }
  ]
}

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unknown",
          "product": "Cisco Unified Communications Manager",
          "vendor": "Cisco",
          "versions": [
            {
              "status": "affected",
              "version": "14"
            },
            {
              "status": "affected",
              "version": "14SU1"
            },
            {
              "status": "affected",
              "version": "14SU2"
            },
            {
              "status": "affected",
              "version": "14SU3"
            },
            {
              "status": "affected",
              "version": "15"
            },
            {
              "status": "affected",
              "version": "15SU1"
            },
            {
              "status": "affected",
              "version": "14SU4"
            },
            {
              "status": "affected",
              "version": "14SU4a"
            },
            {
              "status": "affected",
              "version": "15SU1a"
            },
            {
              "status": "affected",
              "version": "15SU2"
            },
            {
              "status": "affected",
              "version": "15.0.1.13010-1"
            },
            {
              "status": "affected",
              "version": "15.0.1.13011-1"
            },
            {
              "status": "affected",
              "version": "15.0.1.13012-1"
            },
            {
              "status": "affected",
              "version": "15.0.1.13013-1"
            },
            {
              "status": "affected",
              "version": "15.0.1.13014-1"
            },
            {
              "status": "affected",
              "version": "15.0.1.13015-1"
            },
            {
              "status": "affected",
              "version": "15.0.1.13016-1"
            },
            {
              "status": "affected",
              "version": "15.0.1.13017-1"
            },
            {
              "status": "affected",
              "version": "15SU3a"
            },
            {
              "status": "affected",
              "version": "14SU5"
            },
            {
              "status": "affected",
              "version": "15SU4"
            },
            {
              "status": "affected",
              "version": "15SU4a"
            }
          ]
        }
      ],
      "source": "psirt@cisco.com"
    }
  ],
  "cisaActionDue": "2026-06-28",
  "cisaExploitAdd": "2026-06-25",
  "cisaRequiredAction": "Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA\u2019s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA\u2019s \u201cForensics Triage Requirements\u201d (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset\u0027s internet exposure and ensuring adherence to BOD 26-04 patching guidelines.",
  "cisaVulnerabilityName": "Cisco Unified Communications Manager Server-Side Request Forgery (SSRF) Vulnerability",
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:-:*:*:*",
              "matchCriteriaId": "9E708402-3D51-4165-8A97-2B3E68116553",
              "versionEndExcluding": "14su6",
              "versionStartIncluding": "14.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:session_management:*:*:*",
              "matchCriteriaId": "321D5CC9-ECFC-42FD-AAB4-465E3BC399DA",
              "versionEndExcluding": "14su6",
              "versionStartIncluding": "14.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:-:*:*:*",
              "matchCriteriaId": "EFBE275E-8043-4F8B-ABE8-48774CF11648",
              "versionEndIncluding": "15su4a",
              "versionStartIncluding": "15.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:session_management:*:*:*",
              "matchCriteriaId": "06300542-9590-4FE0-8054-7BD15B2CB3BA",
              "versionEndIncluding": "15su4a",
              "versionStartIncluding": "15.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability in Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME) could allow an unauthenticated, remote attacker to conduct server-side request forgery (SSRF) attacks through an affected device.\r\n\r\nThis vulnerability is due to improper input validation for specific HTTP requests. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. A successful exploit could allow the attacker to write files to the underlying operating system that could be used later to elevate to root.\r\nNote: Cisco has assigned this security advisory a Security Impact Rating (SIR) of Critical rather than High as the score indicates. The reason is that exploitation of this vulnerability could result in an attacker elevating privileges to root.\r\nNote: To exploit this vulnerability, the WebDialer service must be enabled. WebDialer is disabled by default."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad en Cisco Unified Communications Manager (Unified CM) y Cisco Unified Communications Manager Session Management Edition (Unified CM SME) podr\u00eda permitir a un atacante remoto no autenticado realizar ataques de falsificaci\u00f3n de petici\u00f3n del lado del servidor (SSRF) a trav\u00e9s de un dispositivo afectado.\nEsta vulnerabilidad se debe a una validaci\u00f3n de entrada incorrecta para peticiones HTTP espec\u00edficas. Un atacante podr\u00eda explotar esta vulnerabilidad enviando una petici\u00f3n HTTP manipulada a un dispositivo afectado. Un exploit exitoso podr\u00eda permitir al atacante escribir archivos en el sistema operativo subyacente que podr\u00edan usarse m\u00e1s tarde para elevar a root.\nNota: Cisco ha asignado a este aviso de seguridad una Calificaci\u00f3n de Impacto de Seguridad (SIR) de Cr\u00edtica en lugar de Alta, como indica la puntuaci\u00f3n. La raz\u00f3n es que la explotaci\u00f3n de esta vulnerabilidad podr\u00eda resultar en que un atacante eleve privilegios a root.\nNota: Para explotar esta vulnerabilidad, el servicio WebDialer debe estar habilitado. WebDialer est\u00e1 deshabilitado por defecto."
    }
  ],
  "id": "CVE-2026-20230",
  "lastModified": "2026-07-22T19:10:00.120",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 8.6,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 4.0,
        "source": "psirt@cisco.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-20230",
          "options": [
            {
              "exploitation": "active"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-06-03T00:00:00+00:00",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-06-03T18:16:20.160",
  "references": [
    {
      "source": "psirt@cisco.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cucm-ssrf-cXPnHcW"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://denizhalil.com/2026/06/12/cve-2026-20230-cisco-unified-cm-ssrf/"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "tags": [
        "US Government Resource"
      ],
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20230"
    }
  ],
  "sourceIdentifier": "psirt@cisco.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-918"
        }
      ],
      "source": "psirt@cisco.com",
      "type": "Secondary"
    }
  ]
}

{
  "affected": [],
  "aliases": [
    "CVE-2026-20230"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-918"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-03T18:16:20Z",
    "severity": "HIGH"
  },
  "details": "A vulnerability in Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME) could allow an unauthenticated, remote attacker to conduct server-side request forgery (SSRF) attacks through an affected device.\n\n This vulnerability is due to improper input validation for specific HTTP requests. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. A successful exploit could allow the attacker to write files to the underlying operating system that could be used later to elevate to root.\n\n Note: Cisco has assigned this security advisory a Security Impact Rating (SIR) of Critical rather than High as the score indicates. The reason is that exploitation of this vulnerability could result in an attacker elevating privileges to root.\n\n Note: To exploit this vulnerability, the WebDialer service must be enabled. WebDialer is disabled by default.",
  "id": "GHSA-fcv7-pchj-75c2",
  "modified": "2026-06-25T21:31:22Z",
  "published": "2026-06-03T18:33:11Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-20230"
    },
    {
      "type": "WEB",
      "url": "https://denizhalil.com/2026/06/12/cve-2026-20230-cisco-unified-cm-ssrf"
    },
    {
      "type": "WEB",
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cucm-ssrf-cXPnHcW"
    },
    {
      "type": "WEB",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20230"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N",
      "type": "CVSS_V3"
    }
  ]
}

{
  "document": {
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
        "label": "WHITE"
      }
    },
    "lang": "nl",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this page to enhance access to its information and security advisories. The use of this security advisory is subject to the following terms and conditions:\n\n    NCSC-NL makes every reasonable effort to ensure that the content of this page is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or continuous keeping up-to-date. The information contained in this security advisory is intended solely for the purpose of providing general information to professional users. No rights can be derived from the information provided therein.\n\n    NCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of this security advisory. This includes damage resulting from the inaccuracy of incompleteness of the information contained in the advisory.\n    This security advisory is subject to Dutch law. All disputes related to or arising from the use of this advisory will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings."
      },
      {
        "category": "description",
        "text": "Cisco heeft een kwetsbaarheid verholpen in Unified Communications Manager (CM) en Unified Communications Manager Session Management Edition (CM SME).",
        "title": "Feiten"
      },
      {
        "category": "description",
        "text": "Een kwaadwillende kan de kwetsbaarheid misbruiken om een Server-Side Request Forgery (SSRF)-aanval uit te voeren. Succesvol misbruik kan leiden tot het injecteren van bestanden en/of scripts, waarmee de kwaadwillende zichzelf root-rechten kan verschaffen.\n\nVoor succesvol misbruik moet de WebDialer service actief zijn. Deze is standaard niet actief en moet bewust zijn geactiveerd door de beheerder. Door deze beperking is grootschalig misbruik minder waarschijnlijk.\n\nCisco meldt bekend te zijn met Proof-of-Concept-code (PoC) die de kwetsbaarheid aantoont. Vooralsnog is (nog) geen publieke PoC of exploit bekend en er is nog geen actief misbruik waargenomen.",
        "title": "Interpretaties"
      },
      {
        "category": "description",
        "text": "Cisco heeft updates uitgebracht om de kwetsbaarheid te verhelpen. Zie bijgevoegde referenties voor meer informatie.",
        "title": "Oplossingen"
      },
      {
        "category": "general",
        "text": "medium",
        "title": "Kans"
      },
      {
        "category": "general",
        "text": "high",
        "title": "Schade"
      },
      {
        "category": "general",
        "text": "Server-Side Request Forgery (SSRF)",
        "title": "CWE-918"
      }
    ],
    "publisher": {
      "category": "coordinator",
      "contact_details": "cert@ncsc.nl",
      "name": "Nationaal Cyber Security Centrum",
      "namespace": "https://www.ncsc.nl/"
    },
    "references": [
      {
        "category": "external",
        "summary": "Reference",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cucm-ssrf-cXPnHcW"
      }
    ],
    "title": "Kwetsbaarheid verholpen in Cisco Unified Communications Manager",
    "tracking": {
      "current_release_date": "2026-06-04T11:34:45.861485Z",
      "generator": {
        "date": "2025-08-04T16:30:00Z",
        "engine": {
          "name": "V.A.",
          "version": "1.3"
        }
      },
      "id": "NCSC-2026-0174",
      "initial_release_date": "2026-06-04T11:34:45.861485Z",
      "revision_history": [
        {
          "date": "2026-06-04T11:34:45.861485Z",
          "number": "1.0.0",
          "summary": "Initiele versie"
        }
      ],
      "status": "final",
      "version": "1.0.0"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:unknown/*",
                "product": {
                  "name": "vers:unknown/*",
                  "product_id": "CSAFPID-1"
                }
              }
            ],
            "category": "product_name",
            "name": "Cisco Unified Communications Manager"
          }
        ],
        "category": "vendor",
        "name": "Cisco"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-20230",
      "cwe": {
        "id": "CWE-918",
        "name": "Server-Side Request Forgery (SSRF)"
      },
      "notes": [
        {
          "category": "other",
          "text": "Server-Side Request Forgery (SSRF)",
          "title": "CWE-918"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-20230 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-20230.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 8.6,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1"
          ]
        }
      ],
      "title": "CVE-2026-20230"
    }
  ]
}

{
  "document": {
    "aggregate_severity": {
      "text": "hoch"
    },
    "category": "csaf_base",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "de-DE",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "Das BSI ist als Anbieter f\u00fcr die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch daf\u00fcr verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgf\u00e4ltig im Einzelfall zu pr\u00fcfen."
      },
      {
        "category": "description",
        "text": "Der Cisco Unified Communications Manager (CUCM, ehemals CallManager) dient zur Gespr\u00e4chsvermittlung in IP-Telefonie-Netzen.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Cisco Unified Communications Manager (CUCM) ausnutzen, um Dateien zu manipulieren und dadurch potenziell root Rechte zu erlangen.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- CISCO Appliance",
        "title": "Betroffene Betriebssysteme"
      }
    ],
    "publisher": {
      "category": "other",
      "contact_details": "csaf-provider@cert-bund.de",
      "name": "Bundesamt f\u00fcr Sicherheit in der Informationstechnik",
      "namespace": "https://www.bsi.bund.de"
    },
    "references": [
      {
        "category": "self",
        "summary": "WID-SEC-W-2026-1801 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-1801.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2026-1801 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-1801"
      },
      {
        "category": "external",
        "summary": "Cisco Security Advisory cisco-sa-cucm-ssrf-cXPnHcW vom 2026-06-04",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cucm-ssrf-cXPnHcW"
      }
    ],
    "source_lang": "en-US",
    "title": "Cisco Unified Communications Manager (CUCM): Schwachstelle erm\u00f6glicht Manipulation von Dateien",
    "tracking": {
      "current_release_date": "2026-06-04T22:00:00.000+00:00",
      "generator": {
        "date": "2026-06-05T11:12:27.576+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.6.0"
        }
      },
      "id": "WID-SEC-W-2026-1801",
      "initial_release_date": "2026-06-04T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2026-06-04T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c14SU6",
                "product": {
                  "name": "Cisco Unified Communications Manager (CUCM) \u003c14SU6",
                  "product_id": "T055017"
                }
              },
              {
                "category": "product_version",
                "name": "14SU6",
                "product": {
                  "name": "Cisco Unified Communications Manager (CUCM) 14SU6",
                  "product_id": "T055017-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:cisco:unified_communications_manager:14su6"
                  }
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003c15SU5",
                "product": {
                  "name": "Cisco Unified Communications Manager (CUCM) \u003c15SU5",
                  "product_id": "T055018"
                }
              },
              {
                "category": "product_version",
                "name": "15SU5",
                "product": {
                  "name": "Cisco Unified Communications Manager (CUCM) 15SU5",
                  "product_id": "T055018-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:cisco:unified_communications_manager:15su5"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Unified Communications Manager (CUCM)"
          }
        ],
        "category": "vendor",
        "name": "Cisco"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-20230",
      "product_status": {
        "known_affected": [
          "T055018",
          "T055017"
        ]
      },
      "release_date": "2026-06-04T22:00:00.000+00:00",
      "title": "CVE-2026-20230"
    }
  ]
}