{"schemaVersion":3,"id":"CVE-2025-20393","aliases":[],"status":"published","duplicateOf":null,"title":"Cisco Multiple Products Improper Input Validation Vulnerability","description":"A vulnerability in the Spam Quarantine feature of Cisco AsyncOS Software for Cisco Secure Email Gateway and Cisco Secure Email and Web Manager could allow an unauthenticated, remote attacker to execute arbitrary system commands on an affected device with root privileges.\n\nThis vulnerability is due to insufficient validation of HTTP requests by the Spam Quarantine feature. An attacker could exploit this vulnerability by sending a crafted HTTP request to the affected device. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system with root 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mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","name":"Cisco Multiple Products Improper Input Validation Vulnerability","description":"Cisco Secure Email Gateway, Secure Email, AsyncOS Software, and Web Manager appliances contains an improper input validation vulnerability that allows threat actors to execute arbitrary commands with root privileges on the underlying operating system of an affected appliance.","notes":[{"type":"text","value":"Please adhere to Cisco's guidelines to assess exposure and mitigate risks. Check for signs of potential compromise on all internet accessible Cisco products affected by this vulnerability. Apply any final mitigations provided by the vendor as soon as they become available. For more information please see: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sma-attack-N9bf4"},{"type":"url","href":"https://nvd.nist.gov/vuln/detail/CVE-2025-20393","label":"nvd.nist.gov/vuln/detail/CVE-2025-20393"}],"vendor":"Cisco","product":"Multiple Products","ransomware":false,"ransomwareUse":"Unknown","exploitationType":null}],"listedCount":1,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":true,"entry":{"source":"cisa","sourceLabel":"CISA","dateAdded":"2025-12-17T00:00:00.000Z","dueDate":"2025-12-24T00:00:00.000Z","requiredAction":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","name":"Cisco Multiple Products Improper Input Validation Vulnerability","description":"Cisco Secure Email Gateway, Secure Email, AsyncOS Software, and Web Manager appliances contains an improper input validation vulnerability that allows threat actors to execute arbitrary commands with root privileges on the underlying operating system of an affected appliance.","notes":[{"type":"text","value":"Please adhere to Cisco's guidelines to assess exposure and mitigate risks. Check for signs of potential compromise on all internet accessible Cisco products affected by this vulnerability. Apply any final mitigations provided by the vendor as soon as they become available. For more information please see: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sma-attack-N9bf4"},{"type":"url","href":"https://nvd.nist.gov/vuln/detail/CVE-2025-20393","label":"nvd.nist.gov/vuln/detail/CVE-2025-20393"}],"vendor":"Cisco","product":"Multiple Products","ransomware":false,"ransomwareUse":"Unknown","exploitationType":null}},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-20","name":"Improper Input Validation","description":"The product receives input or data, but it does\n        not validate or incorrectly validates that the input has the\n        properties that are required to process the data safely and\n        correctly.","type":"weakness","status":"Stable","abstraction":"Class","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/20.html"}],"affected":[{"vendor":"cisco","product":"asyncos","name":"asyncos","label":"asyncos","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< 15.0.5-016","noFixRecorded":false,"fixedIn":null},{"text":"≥ 15.5, < 15.5.4-012","noFixRecorded":false,"fixedIn":null},{"text":"≥ 16.0, < 16.0.4-016","noFixRecorded":false,"fixedIn":null},{"text":"< 15.0.2-007","noFixRecorded":false,"fixedIn":null},{"text":"≥ 15.5, < 15.5.4-007","noFixRecorded":false,"fixedIn":null},{"text":"≥ 16.0, < 16.0.4-010","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 15.0.5-016 | ≥ 15.5, < 15.5.4-012 | ≥ 16.0, < 16.0.4-016 | < 15.0.2-007 | ≥ 15.5, < 15.5.4-007 | ≥ 16.0, < 16.0.4-010","eol":null,"hubHref":"/vendor/cisco/asyncos"},{"vendor":"cisco","product":"cisco secure email","name":"Cisco Secure Email","label":"cisco secure 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