cve-2025-20134
Vulnerability from cvelistv5
Published
2025-08-14 16:28
Modified
2025-08-14 19:21
Summary
Cisco Adaptive Security Appliance and Firepower Threat Defense Software SSL/TLS Certificate Denial of Service Vulnerability
Show details on NVD website


{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-20134",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-08-14T18:42:13.832362Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-08-14T19:21:52.387Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unknown",
          "product": "Cisco Adaptive Security Appliance (ASA) Software",
          "vendor": "Cisco",
          "versions": [
            {
              "status": "affected",
              "version": "9.12.4.39"
            },
            {
              "status": "affected",
              "version": "9.12.4.40"
            },
            {
              "status": "affected",
              "version": "9.14.4.6"
            },
            {
              "status": "affected",
              "version": "9.14.4.7"
            },
            {
              "status": "affected",
              "version": "9.12.4.41"
            },
            {
              "status": "affected",
              "version": "9.12.4.47"
            },
            {
              "status": "affected",
              "version": "9.14.4.12"
            },
            {
              "status": "affected",
              "version": "9.12.4.48"
            },
            {
              "status": "affected",
              "version": "9.14.4.13"
            },
            {
              "status": "affected",
              "version": "9.12.4.50"
            },
            {
              "status": "affected",
              "version": "9.14.4.14"
            },
            {
              "status": "affected",
              "version": "9.12.4.52"
            },
            {
              "status": "affected",
              "version": "9.14.4.15"
            },
            {
              "status": "affected",
              "version": "9.12.4.54"
            },
            {
              "status": "affected",
              "version": "9.14.4.17"
            },
            {
              "status": "affected",
              "version": "9.12.4.55"
            },
            {
              "status": "affected",
              "version": "9.14.4.22"
            },
            {
              "status": "affected",
              "version": "9.14.4.23"
            },
            {
              "status": "affected",
              "version": "9.12.4.56"
            },
            {
              "status": "affected",
              "version": "9.12.4.58"
            },
            {
              "status": "affected",
              "version": "9.12.4.62"
            },
            {
              "status": "affected",
              "version": "9.12.4.65"
            },
            {
              "status": "affected",
              "version": "9.12.4.67"
            },
            {
              "status": "affected",
              "version": "9.14.4.24"
            }
          ]
        },
        {
          "defaultStatus": "unknown",
          "product": "Cisco Firepower Threat Defense Software",
          "vendor": "Cisco",
          "versions": [
            {
              "status": "affected",
              "version": "6.6.5.2"
            },
            {
              "status": "affected",
              "version": "6.4.0.15"
            },
            {
              "status": "affected",
              "version": "6.6.7"
            },
            {
              "status": "affected",
              "version": "6.4.0.16"
            },
            {
              "status": "affected",
              "version": "6.6.7.1"
            },
            {
              "status": "affected",
              "version": "6.4.0.17"
            },
            {
              "status": "affected",
              "version": "6.6.7.2"
            },
            {
              "status": "affected",
              "version": "6.4.0.18"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability in the certificate processing of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the device to reload unexpectedly, resulting in a denial of service (DoS) condition.\r\n\r\nThis vulnerability is due to improper parsing of\u0026nbsp;SSL/TLS certificates. An attacker could exploit this vulnerability by sending a crafted SSL/TLS certificate to an affected system through a listening SSL/TLS socket. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition."
        }
      ],
      "exploits": [
        {
          "lang": "en",
          "value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.6,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
            "version": "3.1"
          },
          "format": "cvssV3_1"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-415",
              "description": "Double Free",
              "lang": "en",
              "type": "cwe"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-08-14T16:28:07.782Z",
        "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "shortName": "cisco"
      },
      "references": [
        {
          "name": "cisco-sa-asaftd-ssltls-dos-eHw76vZe",
          "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-ssltls-dos-eHw76vZe"
        }
      ],
      "source": {
        "advisory": "cisco-sa-asaftd-ssltls-dos-eHw76vZe",
        "defects": [
          "CSCwk44159"
        ],
        "discovery": "INTERNAL"
      },
      "title": "Cisco Adaptive Security Appliance and Firepower Threat Defense Software SSL/TLS Certificate Denial of Service Vulnerability"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
    "assignerShortName": "cisco",
    "cveId": "CVE-2025-20134",
    "datePublished": "2025-08-14T16:28:07.782Z",
    "dateReserved": "2024-10-10T19:15:13.212Z",
    "dateUpdated": "2025-08-14T19:21:52.387Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-20134\",\"sourceIdentifier\":\"psirt@cisco.com\",\"published\":\"2025-08-14T17:15:34.637\",\"lastModified\":\"2025-08-15T13:12:51.217\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A vulnerability in the certificate processing of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the device to reload unexpectedly, resulting in a denial of service (DoS) condition.\\r\\n\\r\\nThis vulnerability is due to improper parsing of\u0026nbsp;SSL/TLS certificates. An attacker could exploit this vulnerability by sending a crafted SSL/TLS certificate to an affected system through a listening SSL/TLS socket. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"psirt@cisco.com\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H\",\"baseScore\":8.6,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":4.0}]},\"weaknesses\":[{\"source\":\"psirt@cisco.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-415\"}]}],\"references\":[{\"url\":\"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-ssltls-dos-eHw76vZe\",\"source\":\"psirt@cisco.com\"}]}}"
  }
}


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