NCSC-2026-0136

Vulnerability from csaf_ncscnl - Published: 2026-05-08 13:08 - Updated: 2026-05-08 13:08
Summary
Kwetsbaarheden verholpen in Cisco Unity Connection
Notes
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: 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. 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. 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.
Feiten: Cisco heeft meerdere kwetsbaarheden verholpen in Cisco Unity Connection.
Interpretaties: De kwetsbaarheden bevinden zich in de web management interface en de Web Inbox web UI van Cisco Unity Connection. Geauthenticeerde aanvallers met geldige inloggegevens kunnen arbitrary code uitvoeren met root privileges, waardoor zij volledige controle over het apparaat krijgen. Daarnaast is er een server-side request forgery (SSRF) kwetsbaarheid die het mogelijk maakt om interne services te manipuleren. Sommige SSRF-aanvallen kunnen ook door niet-geauthenticeerde aanvallers worden uitgevoerd door onjuiste inputvalidatie in de Web Inbox web UI. Deze combinatie van kwetsbaarheden maakt het mogelijk om ongeautoriseerde code uit te voeren en interne systemen te beïnvloeden.
Oplossingen: Cisco heeft updates uitgebracht om de kwetsbaarheden te verhelpen. Zie bijgevoegde referenties voor meer informatie.
Kans: medium
Schade: high
CWE-35: Path Traversal: '.../...//'
CWE-918: Server-Side Request Forgery (SSRF)

Multiple vulnerabilities in Cisco Unity Connection's web management interface allow authenticated remote attackers with valid credentials to execute arbitrary code as root or perform server-side request forgery attacks, compromising the device.

CWE-35 - Path Traversal: '.../...//'

Multiple vulnerabilities in Cisco Unity Connection, including an SSRF flaw in the Web Inbox UI due to improper input validation, allow unauthenticated remote attackers to perform SSRF attacks and execute arbitrary code.

CWE-918 - Server-Side Request Forgery (SSRF)

{
  "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 meerdere kwetsbaarheden verholpen in Cisco Unity Connection.",
        "title": "Feiten"
      },
      {
        "category": "description",
        "text": "De kwetsbaarheden bevinden zich in de web management interface en de Web Inbox web UI van Cisco Unity Connection. Geauthenticeerde aanvallers met geldige inloggegevens kunnen arbitrary code uitvoeren met root privileges, waardoor zij volledige controle over het apparaat krijgen. Daarnaast is er een server-side request forgery (SSRF) kwetsbaarheid die het mogelijk maakt om interne services te manipuleren. Sommige SSRF-aanvallen kunnen ook door niet-geauthenticeerde aanvallers worden uitgevoerd door onjuiste inputvalidatie in de Web Inbox web UI. Deze combinatie van kwetsbaarheden maakt het mogelijk om ongeautoriseerde code uit te voeren en interne systemen te be\u00efnvloeden.",
        "title": "Interpretaties"
      },
      {
        "category": "description",
        "text": "Cisco heeft updates uitgebracht om de kwetsbaarheden 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": "Path Traversal: \u0027.../...//\u0027",
        "title": "CWE-35"
      },
      {
        "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-unity-rce-ssrf-hENhuASy"
      }
    ],
    "title": "Kwetsbaarheden verholpen in Cisco Unity Connection",
    "tracking": {
      "current_release_date": "2026-05-08T13:08:42.320356Z",
      "generator": {
        "date": "2025-08-04T16:30:00Z",
        "engine": {
          "name": "V.A.",
          "version": "1.3"
        }
      },
      "id": "NCSC-2026-0136",
      "initial_release_date": "2026-05-08T13:08:42.320356Z",
      "revision_history": [
        {
          "date": "2026-05-08T13:08:42.320356Z",
          "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": "Unity Connection"
          }
        ],
        "category": "vendor",
        "name": "Cisco"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-20034",
      "cwe": {
        "id": "CWE-35",
        "name": "Path Traversal: \u0027.../...//\u0027"
      },
      "notes": [
        {
          "category": "other",
          "text": "Path Traversal: \u0027.../...//\u0027",
          "title": "CWE-35"
        },
        {
          "category": "other",
          "text": "Server-Side Request Forgery (SSRF)",
          "title": "CWE-918"
        },
        {
          "category": "description",
          "text": "Multiple vulnerabilities in Cisco Unity Connection\u0027s web management interface allow authenticated remote attackers with valid credentials to execute arbitrary code as root or perform server-side request forgery attacks, compromising the device.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-20034 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-20034.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1"
          ]
        }
      ],
      "title": "CVE-2026-20034"
    },
    {
      "cve": "CVE-2026-20035",
      "cwe": {
        "id": "CWE-918",
        "name": "Server-Side Request Forgery (SSRF)"
      },
      "notes": [
        {
          "category": "other",
          "text": "Server-Side Request Forgery (SSRF)",
          "title": "CWE-918"
        },
        {
          "category": "other",
          "text": "Path Traversal: \u0027.../...//\u0027",
          "title": "CWE-35"
        },
        {
          "category": "description",
          "text": "Multiple vulnerabilities in Cisco Unity Connection, including an SSRF flaw in the Web Inbox UI due to improper input validation, allow unauthenticated remote attackers to perform SSRF attacks and execute arbitrary code.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-20035 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-20035.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.2,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1"
          ]
        }
      ],
      "title": "CVE-2026-20035"
    }
  ]
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.


Loading…

Loading…

Loading…
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

Author Source Type Date Other

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.


Loading…

Detection rules are retrieved from Rulezet.

Loading…

Loading…