{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2023-20108",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-20108",
    "idYear": 2023,
    "status": "PUBLISHED",
    "publishedAt": "2023-06-28T00:00:00.000Z",
    "updatedAt": "2024-08-02T08:57:35.889Z",
    "importedAt": "2026-10-24T01:56:49.724Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": null,
      "summary": "A vulnerability in the XCP Authentication Service of the Cisco Unified Communications Manager IM & Presence Service (Unified CM IM&P) could allow an unauthenticated, remote attacker to cause a temporary service outage for all Cisco Unified CM IM&P users who are attempting to authenticate to the service, resulting in a denial of service (DoS) condition.\r\n\r This vulnerability is due to improper validation of user-supplied input. An attacker could exploit this vulnerability by sending a crafted login message to the affected device. A successful exploit could allow the attacker to cause an unexpected restart of the authentication service, preventing new users from successfully authenticating. Exploitation of this vulnerability does not impact Cisco Unified CM IM&P users who were authenticated prior to an attack.",
      "affected": [
        {
          "vendor": "Cisco",
          "product": "Cisco Unified Communications Manager IM and Presence Service",
          "versions": [
            {
              "version": "10.5(1)",
              "status": "affected"
            },
            {
              "version": "10.5(2)",
              "status": "affected"
            },
            {
              "version": "10.5(2a)",
              "status": "affected"
            },
            {
              "version": "10.5(2b)",
              "status": "affected"
            },
            {
              "version": "10.5(2)SU3",
              "status": "affected"
            },
            {
              "version": "10.5(2)SU2a",
              "status": "affected"
            },
            {
              "version": "10.5(2)SU4a",
              "status": "affected"
            },
            {
              "version": "10.5(2)SU4",
              "status": "affected"
            },
            {
              "version": "10.5(1)SU3",
              "status": "affected"
            },
            {
              "version": "10.5(1)SU1",
              "status": "affected"
            },
            {
              "version": "10.5(2)SU1",
              "status": "affected"
            },
            {
              "version": "10.5(2)SU2",
              "status": "affected"
            },
            {
              "version": "10.5(1)SU2",
              "status": "affected"
            },
            {
              "version": "11.5(1)",
              "status": "affected"
            },
            {
              "version": "11.5(1)SU1",
              "status": "affected"
            },
            {
              "version": "11.5(1)SU2",
              "status": "affected"
            },
            {
              "version": "11.5(1)SU3",
              "status": "affected"
            },
            {
              "version": "11.5(1)SU3a",
              "status": "affected"
            },
            {
              "version": "11.5(1)SU4",
              "status": "affected"
            },
            {
              "version": "11.5(1)SU5",
              "status": "affected"
            },
            {
              "version": "11.5(1)SU5a",
              "status": "affected"
            },
            {
              "version": "11.5(1)SU6",
              "status": "affected"
            },
            {
              "version": "11.5(1)SU7",
              "status": "affected"
            },
            {
              "version": "11.5(1)SU8",
              "status": "affected"
            },
            {
              "version": "11.5(1)SU9",
              "status": "affected"
            },
            {
              "version": "11.5(1)SU10",
              "status": "affected"
            },
            {
              "version": "11.5(1)SU11",
              "status": "affected"
            },
            {
              "version": "11.0(1)",
              "status": "affected"
            },
            {
              "version": "11.0(1)SU1",
              "status": "affected"
            },
            {
              "version": "12.5(1)",
              "status": "affected"
            },
            {
              "version": "12.5(1)SU1",
              "status": "affected"
            },
            {
              "version": "12.5(1)SU2",
              "status": "affected"
            },
            {
              "version": "12.5(1)SU3",
              "status": "affected"
            },
            {
              "version": "12.5(1)SU4",
              "status": "affected"
            },
            {
              "version": "12.5(1)SU5",
              "status": "affected"
            },
            {
              "version": "12.5(1)SU6",
              "status": "affected"
            },
            {
              "version": "14",
              "status": "affected"
            },
            {
              "version": "14SU1",
              "status": "affected"
            },
            {
              "version": "14SU2",
              "status": "affected"
            },
            {
              "version": "14SU2a",
              "status": "affected"
            },
            {
              "version": "10.0(1)",
              "status": "affected"
            },
            {
              "version": "10.0(1)SU1",
              "status": "affected"
            },
            {
              "version": "10.0(1)SU2",
              "status": "affected"
            }
          ]
        }
      ]
    }
  }
}