cve-2025-20333
Vulnerability from cvelistv5
Published
2025-09-25 16:12
Modified
2025-09-26 03:55
Severity ?
Summary
A vulnerability in the VPN web server of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an authenticated, remote attacker to execute arbitrary code on an affected device. This vulnerability is due to improper validation of user-supplied input in HTTP(S) requests. An attacker with valid VPN user credentials could exploit this vulnerability by sending crafted HTTP requests to an affected device. A successful exploit could allow the attacker to execute arbitrary code as root, possibly resulting in the complete compromise of the affected device.
Show details on NVD website


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                "role": "CISA Coordinator",
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                "version": "2.0.3"
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                "dateAdded": "2025-09-25",
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              "status": "affected",
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              "status": "affected",
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            {
              "status": "affected",
              "version": "6.6.7"
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              "status": "affected",
              "version": "6.6.7.1"
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              "status": "affected",
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              "status": "affected",
              "version": "6.4.0"
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              "version": "7.0.1.1"
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              "version": "7.0.2.1"
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            {
              "status": "affected",
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            {
              "status": "affected",
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            {
              "status": "affected",
              "version": "7.1.0"
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              "status": "affected",
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              "version": "7.2.4"
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              "version": "7.2.5.1"
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              "version": "7.2.6"
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              "status": "affected",
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            {
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              "version": "7.3.1.1"
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            {
              "status": "affected",
              "version": "7.3.1.2"
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            {
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              "version": "7.4.0"
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            {
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              "status": "affected",
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              "status": "affected",
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        }
      ],
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          "lang": "en",
          "value": "A vulnerability in the VPN web server of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an authenticated, remote attacker to execute arbitrary code on an affected device.\r\n\r This vulnerability is due to improper validation of user-supplied input in HTTP(S) requests. An attacker with valid VPN user credentials could exploit this vulnerability by sending crafted HTTP requests to an affected device. A successful exploit could allow the attacker to execute arbitrary code as root, possibly resulting in the complete compromise of the affected device."
        }
      ],
      "exploits": [
        {
          "lang": "en",
          "value": "The Cisco Product Security Incident Response Team (PSIRT) is aware of attempted exploitation of this vulnerability. Cisco continues to strongly recommend that customers upgrade to a fixed software release to remediate this vulnerability."
        }
      ],
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        {
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            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
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            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
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          },
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      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-120",
              "description": "Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027)",
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      ],
      "providerMetadata": {
        "dateUpdated": "2025-09-25T16:12:14.308Z",
        "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "shortName": "cisco"
      },
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        {
          "name": "cisco-sa-asaftd-webvpn-z5xP8EUB",
          "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-webvpn-z5xP8EUB"
        }
      ],
      "source": {
        "advisory": "cisco-sa-asaftd-webvpn-z5xP8EUB",
        "defects": [
          "CSCwq79831"
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        "discovery": "EXTERNAL"
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    "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
    "assignerShortName": "cisco",
    "cveId": "CVE-2025-20333",
    "datePublished": "2025-09-25T16:12:14.308Z",
    "dateReserved": "2024-10-10T19:15:13.255Z",
    "dateUpdated": "2025-09-26T03:55:13.481Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-20333\",\"sourceIdentifier\":\"psirt@cisco.com\",\"published\":\"2025-09-25T16:15:32.073\",\"lastModified\":\"2025-09-26T14:08:43.430\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A vulnerability in the VPN web server of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an authenticated, remote attacker to execute arbitrary code on an affected device.\\r\\n\\r This vulnerability is due to improper validation of user-supplied input in HTTP(S) requests. An attacker with valid VPN user credentials could exploit this vulnerability by sending crafted HTTP requests to an affected device. A successful exploit could allow the attacker to execute arbitrary code as root, possibly resulting in the complete compromise of the affected device.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"psirt@cisco.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H\",\"baseScore\":9.9,\"baseSeverity\":\"CRITICAL\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.1,\"impactScore\":6.0}]},\"cisaExploitAdd\":\"2025-09-25\",\"cisaActionDue\":\"2025-09-26\",\"cisaRequiredAction\":\"The KEV due date refers to the deadline by which FCEB agencies are expected to review and begin implementing the guidance outlined in Emergency Directive (ED) 25-03 (URL listed below in Notes). 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  }
}


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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