CVE-2026-20152 (GCVE-0-2026-20152)

Vulnerability from cvelistv5 – Published: 2026-04-15 16:03 – Updated: 2026-04-16 19:05
VLAI?
Title
Cisco Secure Web Appliance Authentication Service Traffic Bypass Vulnerability
Summary
A vulnerability in the authentication service feature of Cisco AsyncOS Software for Cisco Secure Web Appliance could allow an unauthenticated, remote attacker to bypass authentication policy requirements. This vulnerability is due to improper validation of user-supplied authentication input in HTTP requests. An attacker could exploit this vulnerability by sending HTTP requests that contain specific authentication requests to an affected device. A successful exploit could allow the attacker to bypass policy enforcement on the device. There is no direct impact to the Cisco Secure Web Appliance. However, as a result of exploiting this vulnerability, an attacker could send HTTP requests that should be restricted through the device.
CWE
  • CWE-305 - Authentication Bypass by Primary Weakness
Assigner
Impacted products
Vendor Product Version
Cisco Cisco Secure Web Appliance Affected: 11.8.0-453
Affected: 12.5.3-002
Affected: 12.0.3-007
Affected: 12.0.3-005
Affected: 14.1.0-032
Affected: 14.1.0-047
Affected: 14.1.0-041
Affected: 12.0.4-002
Affected: 14.0.2-012
Affected: 11.8.0-414
Affected: 12.0.1-268
Affected: 11.8.1-023
Affected: 11.8.3-021
Affected: 11.8.3-018
Affected: 12.5.1-011
Affected: 11.8.4-004
Affected: 12.5.2-007
Affected: 12.5.2-011
Affected: 14.5.0-498
Affected: 12.5.4-005
Affected: 12.5.4-011
Affected: 12.0.5-011
Affected: 14.0.3-014
Affected: 12.5.5-004
Affected: 12.5.5-005
Affected: 12.5.5-008
Affected: 14.0.4-005
Affected: 14.5.1-008
Affected: 14.5.1-016
Affected: 15.0.0-355
Affected: 15.0.0-322
Affected: 12.5.6-008
Affected: 15.1.0-287
Affected: 14.5.2-011
Affected: 15.2.0-116
Affected: 14.0.5-007
Affected: 15.2.0-164
Affected: 14.5.1-510
Affected: 12.0.2-012
Affected: 12.0.2-004
Affected: 14.5.1-607
Affected: 14.5.3-033
Affected: 15.0.1-004
Affected: 15.2.1-011
Affected: 14.5.0-673
Affected: 14.5.0-537
Affected: 12.0.1-334
Affected: 14.0.1-503
Affected: 14.0.1-053
Affected: 11.8.0-429
Affected: 14.0.1-040
Affected: 14.0.1-014
Affected: 12.5.1-043
Affected: 15.2.2-009
Affected: 15.2.3-007
Affected: 15.2.4-022
Affected: 15.2.5-011
Affected: 15.2.5-013
Affected: 14.6.0-108
Create a notification for this product.
Show details on NVD website

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-20152",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-15T16:47:46.764093Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-15T16:56:35.035Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unknown",
          "product": "Cisco Secure Web Appliance",
          "vendor": "Cisco",
          "versions": [
            {
              "status": "affected",
              "version": "11.8.0-453"
            },
            {
              "status": "affected",
              "version": "12.5.3-002"
            },
            {
              "status": "affected",
              "version": "12.0.3-007"
            },
            {
              "status": "affected",
              "version": "12.0.3-005"
            },
            {
              "status": "affected",
              "version": "14.1.0-032"
            },
            {
              "status": "affected",
              "version": "14.1.0-047"
            },
            {
              "status": "affected",
              "version": "14.1.0-041"
            },
            {
              "status": "affected",
              "version": "12.0.4-002"
            },
            {
              "status": "affected",
              "version": "14.0.2-012"
            },
            {
              "status": "affected",
              "version": "11.8.0-414"
            },
            {
              "status": "affected",
              "version": "12.0.1-268"
            },
            {
              "status": "affected",
              "version": "11.8.1-023"
            },
            {
              "status": "affected",
              "version": "11.8.3-021"
            },
            {
              "status": "affected",
              "version": "11.8.3-018"
            },
            {
              "status": "affected",
              "version": "12.5.1-011"
            },
            {
              "status": "affected",
              "version": "11.8.4-004"
            },
            {
              "status": "affected",
              "version": "12.5.2-007"
            },
            {
              "status": "affected",
              "version": "12.5.2-011"
            },
            {
              "status": "affected",
              "version": "14.5.0-498"
            },
            {
              "status": "affected",
              "version": "12.5.4-005"
            },
            {
              "status": "affected",
              "version": "12.5.4-011"
            },
            {
              "status": "affected",
              "version": "12.0.5-011"
            },
            {
              "status": "affected",
              "version": "14.0.3-014"
            },
            {
              "status": "affected",
              "version": "12.5.5-004"
            },
            {
              "status": "affected",
              "version": "12.5.5-005"
            },
            {
              "status": "affected",
              "version": "12.5.5-008"
            },
            {
              "status": "affected",
              "version": "14.0.4-005"
            },
            {
              "status": "affected",
              "version": "14.5.1-008"
            },
            {
              "status": "affected",
              "version": "14.5.1-016"
            },
            {
              "status": "affected",
              "version": "15.0.0-355"
            },
            {
              "status": "affected",
              "version": "15.0.0-322"
            },
            {
              "status": "affected",
              "version": "12.5.6-008"
            },
            {
              "status": "affected",
              "version": "15.1.0-287"
            },
            {
              "status": "affected",
              "version": "14.5.2-011"
            },
            {
              "status": "affected",
              "version": "15.2.0-116"
            },
            {
              "status": "affected",
              "version": "14.0.5-007"
            },
            {
              "status": "affected",
              "version": "15.2.0-164"
            },
            {
              "status": "affected",
              "version": "14.5.1-510"
            },
            {
              "status": "affected",
              "version": "12.0.2-012"
            },
            {
              "status": "affected",
              "version": "12.0.2-004"
            },
            {
              "status": "affected",
              "version": "14.5.1-607"
            },
            {
              "status": "affected",
              "version": "14.5.3-033"
            },
            {
              "status": "affected",
              "version": "15.0.1-004"
            },
            {
              "status": "affected",
              "version": "15.2.1-011"
            },
            {
              "status": "affected",
              "version": "14.5.0-673"
            },
            {
              "status": "affected",
              "version": "14.5.0-537"
            },
            {
              "status": "affected",
              "version": "12.0.1-334"
            },
            {
              "status": "affected",
              "version": "14.0.1-503"
            },
            {
              "status": "affected",
              "version": "14.0.1-053"
            },
            {
              "status": "affected",
              "version": "11.8.0-429"
            },
            {
              "status": "affected",
              "version": "14.0.1-040"
            },
            {
              "status": "affected",
              "version": "14.0.1-014"
            },
            {
              "status": "affected",
              "version": "12.5.1-043"
            },
            {
              "status": "affected",
              "version": "15.2.2-009"
            },
            {
              "status": "affected",
              "version": "15.2.3-007"
            },
            {
              "status": "affected",
              "version": "15.2.4-022"
            },
            {
              "status": "affected",
              "version": "15.2.5-011"
            },
            {
              "status": "affected",
              "version": "15.2.5-013"
            },
            {
              "status": "affected",
              "version": "14.6.0-108"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability in the authentication service feature of Cisco AsyncOS Software for Cisco Secure Web Appliance could allow an unauthenticated, remote attacker to bypass authentication policy requirements.\r\n\r\nThis vulnerability is due to improper validation of user-supplied authentication input in HTTP requests. An attacker could exploit this vulnerability by sending HTTP requests that contain specific authentication requests to an affected device. A successful exploit could allow the attacker to bypass policy enforcement on the device. There is no direct impact to the Cisco Secure Web Appliance. However, as a result of exploiting this vulnerability, an attacker could send HTTP requests that should be restricted through the device."
        }
      ],
      "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": "NONE",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
            "version": "3.1"
          },
          "format": "cvssV3_1"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-305",
              "description": "Authentication Bypass by Primary Weakness",
              "lang": "en",
              "type": "cwe"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-16T19:05:18.524Z",
        "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "shortName": "cisco"
      },
      "references": [
        {
          "name": "cisco-sa-wsa-auth-bypass-6YZkTQhd",
          "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wsa-auth-bypass-6YZkTQhd"
        }
      ],
      "source": {
        "advisory": "cisco-sa-wsa-auth-bypass-6YZkTQhd",
        "defects": [
          "CSCwr20696"
        ],
        "discovery": "EXTERNAL"
      },
      "title": "Cisco Secure Web Appliance Authentication Service Traffic Bypass Vulnerability"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
    "assignerShortName": "cisco",
    "cveId": "CVE-2026-20152",
    "datePublished": "2026-04-15T16:03:43.828Z",
    "dateReserved": "2025-10-08T11:59:15.386Z",
    "dateUpdated": "2026-04-16T19:05:18.524Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-20152",
      "date": "2026-04-16",
      "epss": "0.00071",
      "percentile": "0.21637"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-20152\",\"sourceIdentifier\":\"psirt@cisco.com\",\"published\":\"2026-04-15T17:17:02.870\",\"lastModified\":\"2026-04-15T17:17:02.870\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A vulnerability in the authentication service feature of Cisco AsyncOS Software for Cisco Secure Web Appliance could allow an unauthenticated, remote attacker to bypass authentication policy requirements.\\r\\n\\r\\nThis vulnerability is due to improper validation of user-supplied authentication input in HTTP requests. An attacker could exploit this vulnerability by sending HTTP requests that contain specific authentication requests to an affected device. A successful exploit could allow the attacker to bypass policy enforcement on the device. There is no direct impact to the Cisco Secure Web Appliance. However, as a result of exploiting this vulnerability, an attacker could send HTTP requests that should be restricted through the device.\"}],\"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:U/C:N/I:L/A:N\",\"baseScore\":5.3,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.9,\"impactScore\":1.4}]},\"weaknesses\":[{\"source\":\"psirt@cisco.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-305\"}]}],\"references\":[{\"url\":\"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wsa-auth-bypass-6YZkTQhd\",\"source\":\"psirt@cisco.com\"}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-20152\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-04-15T16:47:46.764093Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-04-15T16:56:24.673Z\"}}], \"cna\": {\"title\": \"Cisco Secure Web Appliance Authentication Service Traffic Bypass Vulnerability\", \"source\": {\"defects\": [\"CSCwr20696\"], \"advisory\": \"cisco-sa-wsa-auth-bypass-6YZkTQhd\", \"discovery\": \"EXTERNAL\"}, \"metrics\": [{\"format\": \"cvssV3_1\", \"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 5.3, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N\", \"integrityImpact\": \"LOW\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"NONE\"}}], \"affected\": [{\"vendor\": \"Cisco\", \"product\": \"Cisco Secure Web Appliance\", \"versions\": [{\"status\": \"affected\", \"version\": \"11.8.0-453\"}, {\"status\": \"affected\", \"version\": \"12.5.3-002\"}, {\"status\": \"affected\", \"version\": \"12.0.3-007\"}, {\"status\": \"affected\", \"version\": \"12.0.3-005\"}, {\"status\": \"affected\", \"version\": \"14.1.0-032\"}, {\"status\": \"affected\", \"version\": \"14.1.0-047\"}, {\"status\": \"affected\", \"version\": \"14.1.0-041\"}, {\"status\": \"affected\", \"version\": \"12.0.4-002\"}, {\"status\": \"affected\", \"version\": \"14.0.2-012\"}, {\"status\": \"affected\", \"version\": \"11.8.0-414\"}, {\"status\": \"affected\", \"version\": \"12.0.1-268\"}, {\"status\": \"affected\", \"version\": \"11.8.1-023\"}, {\"status\": \"affected\", \"version\": \"11.8.3-021\"}, {\"status\": \"affected\", \"version\": \"11.8.3-018\"}, {\"status\": \"affected\", \"version\": \"12.5.1-011\"}, {\"status\": \"affected\", \"version\": \"11.8.4-004\"}, {\"status\": \"affected\", \"version\": \"12.5.2-007\"}, {\"status\": \"affected\", \"version\": \"12.5.2-011\"}, {\"status\": \"affected\", \"version\": \"14.5.0-498\"}, {\"status\": \"affected\", \"version\": \"12.5.4-005\"}, {\"status\": \"affected\", \"version\": \"12.5.4-011\"}, {\"status\": \"affected\", \"version\": \"12.0.5-011\"}, {\"status\": \"affected\", \"version\": \"14.0.3-014\"}, {\"status\": \"affected\", \"version\": \"12.5.5-004\"}, {\"status\": \"affected\", \"version\": \"12.5.5-005\"}, {\"status\": \"affected\", \"version\": \"12.5.5-008\"}, {\"status\": \"affected\", \"version\": \"14.0.4-005\"}, {\"status\": \"affected\", \"version\": \"14.5.1-008\"}, {\"status\": \"affected\", \"version\": \"14.5.1-016\"}, {\"status\": \"affected\", \"version\": \"15.0.0-355\"}, {\"status\": \"affected\", \"version\": \"15.0.0-322\"}, {\"status\": \"affected\", \"version\": \"12.5.6-008\"}, {\"status\": \"affected\", \"version\": \"15.1.0-287\"}, {\"status\": \"affected\", \"version\": \"14.5.2-011\"}, {\"status\": \"affected\", \"version\": \"15.2.0-116\"}, {\"status\": \"affected\", \"version\": \"14.0.5-007\"}, {\"status\": \"affected\", \"version\": \"15.2.0-164\"}, {\"status\": \"affected\", \"version\": \"14.5.1-510\"}, {\"status\": \"affected\", \"version\": \"12.0.2-012\"}, {\"status\": \"affected\", \"version\": \"12.0.2-004\"}, {\"status\": \"affected\", \"version\": \"14.5.1-607\"}, {\"status\": \"affected\", \"version\": \"14.5.3-033\"}, {\"status\": \"affected\", \"version\": \"15.0.1-004\"}, {\"status\": \"affected\", \"version\": \"15.2.1-011\"}, {\"status\": \"affected\", \"version\": \"14.5.0-673\"}, {\"status\": \"affected\", \"version\": \"14.5.0-537\"}, {\"status\": \"affected\", \"version\": \"12.0.1-334\"}, {\"status\": \"affected\", \"version\": \"14.0.1-503\"}, {\"status\": \"affected\", \"version\": \"14.0.1-053\"}, {\"status\": \"affected\", \"version\": \"11.8.0-429\"}, {\"status\": \"affected\", \"version\": \"14.0.1-040\"}, {\"status\": \"affected\", \"version\": \"14.0.1-014\"}, {\"status\": \"affected\", \"version\": \"12.5.1-043\"}, {\"status\": \"affected\", \"version\": \"15.2.2-009\"}, {\"status\": \"affected\", \"version\": \"15.2.3-007\"}, {\"status\": \"affected\", \"version\": \"15.2.4-022\"}, {\"status\": \"affected\", \"version\": \"15.2.5-011\"}, {\"status\": \"affected\", \"version\": \"15.2.5-013\"}, {\"status\": \"affected\", \"version\": \"14.6.0-108\"}], \"defaultStatus\": \"unknown\"}], \"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.\"}], \"references\": [{\"url\": \"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wsa-auth-bypass-6YZkTQhd\", \"name\": \"cisco-sa-wsa-auth-bypass-6YZkTQhd\"}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"A vulnerability in the authentication service feature of Cisco AsyncOS Software for Cisco Secure Web Appliance could allow an unauthenticated, remote attacker to bypass authentication policy requirements.\\r\\n\\r\\nThis vulnerability is due to improper validation of user-supplied authentication input in HTTP requests. An attacker could exploit this vulnerability by sending HTTP requests that contain specific authentication requests to an affected device. A successful exploit could allow the attacker to bypass policy enforcement on the device. There is no direct impact to the Cisco Secure Web Appliance. However, as a result of exploiting this vulnerability, an attacker could send HTTP requests that should be restricted through the device.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"cwe\", \"cweId\": \"CWE-305\", \"description\": \"Authentication Bypass by Primary Weakness\"}]}], \"providerMetadata\": {\"orgId\": \"d1c1063e-7a18-46af-9102-31f8928bc633\", \"shortName\": \"cisco\", \"dateUpdated\": \"2026-04-16T19:05:18.524Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-20152\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-04-16T19:05:18.524Z\", \"dateReserved\": \"2025-10-08T11:59:15.386Z\", \"assignerOrgId\": \"d1c1063e-7a18-46af-9102-31f8928bc633\", \"datePublished\": \"2026-04-15T16:03:43.828Z\", \"assignerShortName\": \"cisco\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.


Loading…

Loading…

Loading…

Sightings

Author Source Type Date

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…