Vulnerability-Lookup

CVE-2026-20056 (GCVE-0-2026-20056)

Vulnerability from cvelistv5 – Published: 2026-02-04 16:11 – Updated: 2026-02-04 16:40

Title

Cisco Secure Web Appliance TBD Bypass Vulnerability

Summary

A vulnerability in the Dynamic Vectoring and Streaming (DVS) Engine implementation of Cisco AsyncOS Software for Cisco Secure Web Appliance could allow an unauthenticated, remote attacker to bypass the anti-malware scanner, allowing malicious archive files to be downloaded. This vulnerability is due to improper handling of certain archive files. An attacker could exploit this vulnerability by sending a crafted archive file, which should be blocked, through an affected device. A successful exploit could allow the attacker to bypass the anti-malware scanner and download malware onto an end user workstation. The downloaded malware will not automatically execute unless the end user extracts and launches the malicious file.

Severity

4 (Medium)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-02-04 16:40 UTC

CWE

CWE-494 - Download of Code Without Integrity Check

Assigner

cisco CNA under the mitre root

CNA scorecard C 66/100 over 443 records in the last 180 days details

References

1 reference

URL	Tags
https://sec.cloudapps.cisco.com/security/center/c…

Impacted products

1 product

Vendor	Product	Version	CPE status
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: 15.5.0-566 Affected: 15.2.3-007 Affected: 15.5.0-574 Affected: 15.5.0-710 Affected: 15.2.4-022 Affected: 15.5.1-002	guessed

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-20056",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-02-04T16:40:05.362057Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-02-04T16:40:11.391Z",
          "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": "15.5.0-566"
            },
            {
              "status": "affected",
              "version": "15.2.3-007"
            },
            {
              "status": "affected",
              "version": "15.5.0-574"
            },
            {
              "status": "affected",
              "version": "15.5.0-710"
            },
            {
              "status": "affected",
              "version": "15.2.4-022"
            },
            {
              "status": "affected",
              "version": "15.5.1-002"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability in the Dynamic Vectoring and Streaming (DVS) Engine implementation of Cisco AsyncOS Software for Cisco Secure Web Appliance could allow an unauthenticated, remote attacker to bypass the anti-malware scanner, allowing malicious archive files to be downloaded.\r\n\r\nThis vulnerability is due to improper handling of certain archive files. An attacker could exploit this vulnerability by sending a crafted archive file, which should be blocked, through an affected device. A successful exploit could allow the attacker to bypass the anti-malware scanner and download malware onto an end user workstation. The downloaded malware will not automatically execute unless the end user extracts and launches the malicious file.\u0026nbsp;"
        }
      ],
      "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": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N",
            "version": "3.1"
          },
          "format": "cvssV3_1"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-494",
              "description": "Download of Code Without Integrity Check",
              "lang": "en",
              "type": "cwe"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-02-04T16:11:48.273Z",
        "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "shortName": "cisco"
      },
      "references": [
        {
          "name": "cisco-sa-wsa-archive-bypass-Scx2e8zF",
          "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wsa-archive-bypass-Scx2e8zF"
        }
      ],
      "source": {
        "advisory": "cisco-sa-wsa-archive-bypass-Scx2e8zF",
        "defects": [
          "CSCwq69761"
        ],
        "discovery": "EXTERNAL"
      },
      "title": "Cisco Secure Web Appliance TBD  Bypass Vulnerability"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
    "assignerShortName": "cisco",
    "cveId": "CVE-2026-20056",
    "datePublished": "2026-02-04T16:11:48.273Z",
    "dateReserved": "2025-10-08T11:59:15.356Z",
    "dateUpdated": "2026-02-04T16:40:11.391Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-20056",
      "date": "2026-10-30",
      "epss": "0.00163",
      "percentile": "0.05453"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "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": "15.5.0-566"
                  },
                  {
                    "status": "affected",
                    "version": "15.2.3-007"
                  },
                  {
                    "status": "affected",
                    "version": "15.5.0-574"
                  },
                  {
                    "status": "affected",
                    "version": "15.5.0-710"
                  },
                  {
                    "status": "affected",
                    "version": "15.2.4-022"
                  },
                  {
                    "status": "affected",
                    "version": "15.5.1-002"
                  }
                ]
              }
            ],
            "source": "psirt@cisco.com"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "A vulnerability in the Dynamic Vectoring and Streaming (DVS) Engine implementation of Cisco AsyncOS Software for Cisco Secure Web Appliance could allow an unauthenticated, remote attacker to bypass the anti-malware scanner, allowing malicious archive files to be downloaded.\r\n\r\nThis vulnerability is due to improper handling of certain archive files. An attacker could exploit this vulnerability by sending a crafted archive file, which should be blocked, through an affected device. A successful exploit could allow the attacker to bypass the anti-malware scanner and download malware onto an end user workstation. The downloaded malware will not automatically execute unless the end user extracts and launches the malicious file.\u0026nbsp;"
          },
          {
            "lang": "es",
            "value": "Una vulnerabilidad en la implementaci\u00f3n del motor Dynamic Vectoring and Streaming (DVS) de Cisco AsyncOS Software para Cisco Secure Web Appliance podr\u00eda permitir a un atacante remoto no autenticado eludir el esc\u00e1ner anti-malware, permitiendo la descarga de archivos comprimidos maliciosos.\n\nEsta vulnerabilidad se debe a un manejo inadecuado de ciertos archivos comprimidos. Un atacante podr\u00eda explotar esta vulnerabilidad enviando un archivo comprimido manipulado, que deber\u00eda ser bloqueado, a trav\u00e9s de un dispositivo afectado. Un exploit exitoso podr\u00eda permitir al atacante eludir el esc\u00e1ner anti-malware y descargar malware en una estaci\u00f3n de trabajo de usuario final. El malware descargado no se ejecutar\u00e1 autom\u00e1ticamente a menos que el usuario final extraiga y ejecute el archivo malicioso."
          }
        ],
        "id": "CVE-2026-20056",
        "lastModified": "2026-06-17T10:16:59.583",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "HIGH",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 4.0,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "LOW",
                "privilegesRequired": "NONE",
                "scope": "CHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 2.2,
              "impactScore": 1.4,
              "source": "psirt@cisco.com",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2026-20056",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-02-04T16:40:05.362057Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2026-02-04T17:16:13.927",
        "references": [
          {
            "source": "psirt@cisco.com",
            "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wsa-archive-bypass-Scx2e8zF"
          }
        ],
        "sourceIdentifier": "psirt@cisco.com",
        "vulnStatus": "Deferred",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-494"
              }
            ],
            "source": "psirt@cisco.com",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "current_release_date": "2026-02-05T19:23:49+00:00",
      "cve": "CVE-2026-20056",
      "id": "CVE-2026-20056",
      "initial_release_date": "2026-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "Cisco Secure Web Appliance TBD  Bypass Vulnerability",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-20056.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-20056",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-02-04T16:40:05.362057Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-02-04T16:40:08.657Z",
              "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": "15.5.0-566"
                },
                {
                  "status": "affected",
                  "version": "15.2.3-007"
                },
                {
                  "status": "affected",
                  "version": "15.5.0-574"
                },
                {
                  "status": "affected",
                  "version": "15.5.0-710"
                },
                {
                  "status": "affected",
                  "version": "15.2.4-022"
                },
                {
                  "status": "affected",
                  "version": "15.5.1-002"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "A vulnerability in the Dynamic Vectoring and Streaming (DVS) Engine implementation of Cisco AsyncOS Software for Cisco Secure Web Appliance could allow an unauthenticated, remote attacker to bypass the anti-malware scanner, allowing malicious archive files to be downloaded.\r\n\r\nThis vulnerability is due to improper handling of certain archive files. An attacker could exploit this vulnerability by sending a crafted archive file, which should be blocked, through an affected device. A successful exploit could allow the attacker to bypass the anti-malware scanner and download malware onto an end user workstation. The downloaded malware will not automatically execute unless the end user extracts and launches the malicious file.\u0026nbsp;"
            }
          ],
          "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": "HIGH",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 4,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "LOW",
                "privilegesRequired": "NONE",
                "scope": "CHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N",
                "version": "3.1"
              },
              "format": "cvssV3_1"
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-494",
                  "description": "Download of Code Without Integrity Check",
                  "lang": "en",
                  "type": "cwe"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-02-04T16:11:48.273Z",
            "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
            "shortName": "cisco"
          },
          "references": [
            {
              "name": "cisco-sa-wsa-archive-bypass-Scx2e8zF",
              "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wsa-archive-bypass-Scx2e8zF"
            }
          ],
          "source": {
            "advisory": "cisco-sa-wsa-archive-bypass-Scx2e8zF",
            "defects": [
              "CSCwq69761"
            ],
            "discovery": "EXTERNAL"
          },
          "title": "Cisco Secure Web Appliance TBD  Bypass Vulnerability"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "assignerShortName": "cisco",
        "cveId": "CVE-2026-20056",
        "datePublished": "2026-02-04T16:11:48.273Z",
        "dateReserved": "2025-10-08T11:59:15.356Z",
        "dateUpdated": "2026-02-04T16:40:11.391Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

BDU:2026-02640 (CVE-2026-20056)

Vulnerability from fstec – Published: 2026-03-06 – Updated: 2026-03-06 – View on bdu.fstec.ru Fixed

Title

Уязвимость реализации механизма динамической векторизации и потоковой передачи (DVS) средства защиты Cisco Secure Web Appliance, позволяющая нарушителю обойти существующие ограничения безопасности

Summary

Уязвимость реализации механизма динамической векторизации и потоковой передачи (DVS) средства защиты Cisco Secure Web Appliance связана с загрузкой кода без проверки его целостности. Эксплуатация уязвимости может позволить нарушителю, действующему удаленно, обойти существующие ограничения безопасности

Severity

2.6 (Low) CVSS 2.0


                      
                        AV:N/AC:H/Au:N/C:N/I:P/A:N

4.0 (Medium) CVSS 3.1


                      
                        CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N

Class

Code vulnerability

Status

Confirmed by the vendor

Exploitation

Data structure manipulation

Incidents

Being clarified

Remediation

Software update

CWE

CWE-494 - Загрузка кода без проверки целостности

Aliases

CVE-2026-20056

References

1 reference

URL
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/c…

Impacted products

1 product from 2 vendors

Vendors

Cisco Systems, Inc.

Products

Cisco Secure Web Appliance

Versions

от 15.2 до 15.2.5-013 (Cisco Secure Web Appliance)

Product types

Network device, Network appliance software

Mitigations

Использование рекомендаций: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wsa-archive-bypass-Scx2e8zF

JSON

To clipboard

{
  "CVSS 2.0": "AV:N/AC:H/Au:N/C:N/I:P/A:N",
  "CVSS 3.0": "AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N",
  "CVSS 4.0": null,
  "remediation_\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": null,
  "remediation_\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435": null,
  "\u0412\u0435\u043d\u0434\u043e\u0440 \u041f\u041e": "Cisco Systems, Inc.",
  "\u0412\u0435\u0440\u0441\u0438\u044f \u041f\u041e": "\u043e\u0442 15.2 \u0434\u043e 15.2.5-013 (Cisco Secure Web Appliance)",
  "\u0412\u043e\u0437\u043c\u043e\u0436\u043d\u044b\u0435 \u043c\u0435\u0440\u044b \u043f\u043e \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044e": "\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0439:\nhttps://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wsa-archive-bypass-Scx2e8zF",
  "\u0414\u0430\u0442\u0430 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u044f": "04.02.2026",
  "\u0414\u0430\u0442\u0430 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0433\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f": "06.03.2026",
  "\u0414\u0430\u0442\u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438": "06.03.2026",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": "BDU:2026-02640",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440\u044b \u0434\u0440\u0443\u0433\u0438\u0445 \u0441\u0438\u0441\u0442\u0435\u043c \u043e\u043f\u0438\u0441\u0430\u043d\u0438\u0439 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "CVE-2026-20056",
  "\u0418\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f \u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430",
  "\u041a\u043b\u0430\u0441\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043a\u043e\u0434\u0430",
  "\u041d\u0430\u0437\u0432\u0430\u043d\u0438\u0435 \u041f\u041e": "Cisco Secure Web Appliance",
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u041e\u0421 \u0438 \u0442\u0438\u043f \u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u043e\u0439 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b": null,
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u043c\u0435\u0445\u0430\u043d\u0438\u0437\u043c\u0430 \u0434\u0438\u043d\u0430\u043c\u0438\u0447\u0435\u0441\u043a\u043e\u0439 \u0432\u0435\u043a\u0442\u043e\u0440\u0438\u0437\u0430\u0446\u0438\u0438 \u0438 \u043f\u043e\u0442\u043e\u043a\u043e\u0432\u043e\u0439 \u043f\u0435\u0440\u0435\u0434\u0430\u0447\u0438 (DVS) \u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0430 \u0437\u0430\u0449\u0438\u0442\u044b Cisco Secure Web Appliance, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e \u043e\u0431\u043e\u0439\u0442\u0438 \u0441\u0443\u0449\u0435\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0435 \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u0438\u044f \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438",
  "\u041d\u0430\u043b\u0438\u0447\u0438\u0435 \u044d\u043a\u0441\u043f\u043b\u043e\u0439\u0442\u0430": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "\u0417\u0430\u0433\u0440\u0443\u0437\u043a\u0430 \u043a\u043e\u0434\u0430 \u0431\u0435\u0437 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438 \u0446\u0435\u043b\u043e\u0441\u0442\u043d\u043e\u0441\u0442\u0438 (CWE-494)",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u043c\u0435\u0445\u0430\u043d\u0438\u0437\u043c\u0430 \u0434\u0438\u043d\u0430\u043c\u0438\u0447\u0435\u0441\u043a\u043e\u0439 \u0432\u0435\u043a\u0442\u043e\u0440\u0438\u0437\u0430\u0446\u0438\u0438 \u0438 \u043f\u043e\u0442\u043e\u043a\u043e\u0432\u043e\u0439 \u043f\u0435\u0440\u0435\u0434\u0430\u0447\u0438 (DVS) \u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0430 \u0437\u0430\u0449\u0438\u0442\u044b Cisco Secure Web Appliance \u0441\u0432\u044f\u0437\u0430\u043d\u0430  \u0441 \u0437\u0430\u0433\u0440\u0443\u0437\u043a\u043e\u0439 \u043a\u043e\u0434\u0430 \u0431\u0435\u0437 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438 \u0435\u0433\u043e \u0446\u0435\u043b\u043e\u0441\u0442\u043d\u043e\u0441\u0442\u0438. \u042d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u043c\u043e\u0436\u0435\u0442 \u043f\u043e\u0437\u0432\u043e\u043b\u0438\u0442\u044c \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e, \u0434\u0435\u0439\u0441\u0442\u0432\u0443\u044e\u0449\u0435\u043c\u0443 \u0443\u0434\u0430\u043b\u0435\u043d\u043d\u043e, \u043e\u0431\u043e\u0439\u0442\u0438 \u0441\u0443\u0449\u0435\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0435 \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u0438\u044f \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438",
  "\u041f\u043e\u0441\u043b\u0435\u0434\u0441\u0442\u0432\u0438\u044f \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": null,
  "\u041f\u0440\u043e\u0447\u0430\u044f \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f": null,
  "\u0421\u0432\u044f\u0437\u044c \u0441 \u0438\u043d\u0446\u0438\u0434\u0435\u043d\u0442\u0430\u043c\u0438 \u0418\u0411": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u0421\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u0430",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044f": "\u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438": "\u041c\u0430\u043d\u0438\u043f\u0443\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0430\u043c\u0438 \u0434\u0430\u043d\u043d\u044b\u0445",
  "\u0421\u0441\u044b\u043b\u043a\u0438 \u043d\u0430 \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u0438": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wsa-archive-bypass-Scx2e8zF",
  "\u0421\u0442\u0430\u0442\u0443\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041f\u043e\u0434\u0442\u0432\u0435\u0440\u0436\u0434\u0435\u043d\u0430 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u0435\u043c",
  "\u0422\u0438\u043f \u041f\u041e": "\u0421\u0435\u0442\u0435\u0432\u043e\u0435 \u0441\u0440\u0435\u0434\u0441\u0442\u0432\u043e, \u041f\u041e \u0441\u0435\u0442\u0435\u0432\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e-\u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u043e\u0433\u043e \u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0430",
  "\u0422\u0438\u043f \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "CWE-494",
  "\u0423\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041d\u0438\u0437\u043a\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 2.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 2,6)\n\u0421\u0440\u0435\u0434\u043d\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 3.1 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 4)"
}

CISCO-SA-WSA-ARCHIVE-BYPASS-SCX2E8ZF

Vulnerability from csaf_cisco - Published: 2026-02-04 16:00 - Updated: 2026-02-20 21:08

Summary

Cisco Secure Web Appliance Real-Time Scanning Archive File Bypass Vulnerability

Scope

1 vulnerability in this advisory, including CVE-2026-20056.

CVE-2026-20056

4.0 (Medium)


                
                  CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N

Known affected: 1 product

https://software.cisco.com

Open the full advisory

FKIE_CVE-2026-20056

Vulnerability from fkie_nvd - Published: 2026-02-04 17:16 - Updated: 2026-06-17 10:16

Severity

4.0 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N

Summary

References

	URL	Tags
	psirt@cisco.com	https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wsa-archive-bypass-Scx2e8zF

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "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": "15.5.0-566"
            },
            {
              "status": "affected",
              "version": "15.2.3-007"
            },
            {
              "status": "affected",
              "version": "15.5.0-574"
            },
            {
              "status": "affected",
              "version": "15.5.0-710"
            },
            {
              "status": "affected",
              "version": "15.2.4-022"
            },
            {
              "status": "affected",
              "version": "15.5.1-002"
            }
          ]
        }
      ],
      "source": "psirt@cisco.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability in the Dynamic Vectoring and Streaming (DVS) Engine implementation of Cisco AsyncOS Software for Cisco Secure Web Appliance could allow an unauthenticated, remote attacker to bypass the anti-malware scanner, allowing malicious archive files to be downloaded.\r\n\r\nThis vulnerability is due to improper handling of certain archive files. An attacker could exploit this vulnerability by sending a crafted archive file, which should be blocked, through an affected device. A successful exploit could allow the attacker to bypass the anti-malware scanner and download malware onto an end user workstation. The downloaded malware will not automatically execute unless the end user extracts and launches the malicious file.\u0026nbsp;"
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad en la implementaci\u00f3n del motor Dynamic Vectoring and Streaming (DVS) de Cisco AsyncOS Software para Cisco Secure Web Appliance podr\u00eda permitir a un atacante remoto no autenticado eludir el esc\u00e1ner anti-malware, permitiendo la descarga de archivos comprimidos maliciosos.\n\nEsta vulnerabilidad se debe a un manejo inadecuado de ciertos archivos comprimidos. Un atacante podr\u00eda explotar esta vulnerabilidad enviando un archivo comprimido manipulado, que deber\u00eda ser bloqueado, a trav\u00e9s de un dispositivo afectado. Un exploit exitoso podr\u00eda permitir al atacante eludir el esc\u00e1ner anti-malware y descargar malware en una estaci\u00f3n de trabajo de usuario final. El malware descargado no se ejecutar\u00e1 autom\u00e1ticamente a menos que el usuario final extraiga y ejecute el archivo malicioso."
    }
  ],
  "id": "CVE-2026-20056",
  "lastModified": "2026-06-17T10:16:59.583",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 4.0,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 1.4,
        "source": "psirt@cisco.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-20056",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-02-04T16:40:05.362057Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-02-04T17:16:13.927",
  "references": [
    {
      "source": "psirt@cisco.com",
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wsa-archive-bypass-Scx2e8zF"
    }
  ],
  "sourceIdentifier": "psirt@cisco.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-494"
        }
      ],
      "source": "psirt@cisco.com",
      "type": "Secondary"
    }
  ]
}

GHSA-5V8R-9WMJ-294X

Vulnerability from github – Published: 2026-02-04 18:30 – Updated: 2026-02-04 18:30

Details

This vulnerability is due to improper handling of certain archive files. An attacker could exploit this vulnerability by sending a crafted archive file, which should be blocked, through an affected device. A successful exploit could allow the attacker to bypass the anti-malware scanner and download malware onto an end user workstation. The downloaded malware will not automatically execute unless the end user extracts and launches the malicious file.

Severity

4.0 (Medium)


                  
                    CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-20056"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-494"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-02-04T17:16:13Z",
    "severity": "MODERATE"
  },
  "details": "A vulnerability in the Dynamic Vectoring and Streaming (DVS) Engine implementation of Cisco AsyncOS Software for Cisco Secure Web Appliance could allow an unauthenticated, remote attacker to bypass the anti-malware scanner, allowing malicious archive files to be downloaded.\n\nThis vulnerability is due to improper handling of certain archive files. An attacker could exploit this vulnerability by sending a crafted archive file, which should be blocked, through an affected device. A successful exploit could allow the attacker to bypass the anti-malware scanner and download malware onto an end user workstation. The downloaded malware will not automatically execute unless the end user extracts and launches the malicious file.\u0026nbsp;",
  "id": "GHSA-5v8r-9wmj-294x",
  "modified": "2026-02-04T18:30:42Z",
  "published": "2026-02-04T18:30:42Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-20056"
    },
    {
      "type": "WEB",
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wsa-archive-bypass-Scx2e8zF"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

WID-SEC-W-2026-0311

Vulnerability from csaf_certbund - Published: 2026-02-04 23:00 - Updated: 2026-02-04 23:00

Summary

Cisco Secure Web Appliance: Schwachstelle ermöglicht Umgehen von Sicherheitsvorkehrungen

Severity

Niedrig

Scope

1 vulnerability in this advisory, including CVE-2026-20056.

CVE-2026-20056

Known affected: 2 products

Open the full advisory

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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

Publication & reservation Sightings KEV catalogs Other timestamps

Loading timeline…

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2026-20056 (GCVE-0-2026-20056)

BDU:2026-02640 (CVE-2026-20056)

CISCO-SA-WSA-ARCHIVE-BYPASS-SCX2E8ZF

FKIE_CVE-2026-20056

GHSA-5V8R-9WMJ-294X

WID-SEC-W-2026-0311

Tags

Sightings

Nomenclature

Vulnerability timeline

Related by attack behaviour