{"id":"CVE-2025-20393","title":"Cisco Secure Email Gateway and Cisco Secure Email and Web Manager Remote Command Execution Vulnerability","summary":"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 aff…","severity":"critical","cvss":10,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","cvssSource":"cna","cwe":["CWE-20"],"vendor":"Cisco","product":"Cisco Secure Email","affected":["secure_email 14.0.0-698","secure_email 13.5.1-277","secure_email 13.0.0-392","secure_email 14.2.0-620","secure_email 13.0.5-007","secure_email 13.5.4-038","secure_email 14.2.1-020","secure_email 14.3.0-032","secure_email 15.0.0-104","secure_email 15.0.1-030","secure_email 15.5.0-048","secure_email 15.5.1-055","secure_email 15.5.2-018","secure_email 16.0.0-050","secure_email 15.0.3-002","secure_email 16.0.0-054","secure_email 15.5.3-022","secure_email 16.0.1-017","secure_email_and_web_manager 13.6.2-023","secure_email_and_web_manager 13.6.2-078","secure_email_and_web_manager 13.0.0-249","secure_email_and_web_manager 13.0.0-277","secure_email_and_web_manager 13.8.1-052","secure_email_and_web_manager 13.8.1-068","secure_email_and_web_manager 13.8.1-074","secure_email_and_web_manager 14.0.0-404","secure_email_and_web_manager 12.8.1-002","secure_email_and_web_manager 14.1.0-227","secure_email_and_web_manager 13.6.1-201","secure_email_and_web_manager 14.2.0-203","secure_email_and_web_manager 14.2.0-212","secure_email_and_web_manager 12.8.1-021","secure_email_and_web_manager 13.8.1-108","secure_email_and_web_manager 14.2.0-224","secure_email_and_web_manager 14.3.0-120","secure_email_and_web_manager 15.0.0-334","secure_email_and_web_manager 15.5.1-024","secure_email_and_web_manager 15.5.1-029","secure_email_and_web_manager 15.5.2-005","secure_email_and_web_manager 16.0.0-195","secure_email_and_web_manager 15.5.3-017","secure_email_and_web_manager 16.0.1-010","secure_email_and_web_manager 15.0.1-035","secure_email_and_web_manager 16.0.2-088"],"ssvc":{"exploitation":"active","automatable":"yes","technicalImpact":"total","timestamp":"2025-12-18T04:55:22.327258Z"},"exploited":true,"exploitAvailable":true,"published":"2025-12-17","updated":"2026-10-07","sourceUpdated":"2026-10-07T19:22:07.139Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-20393","references":[{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sma-attack-N9bf4","label":"cisco-sa-sma-attack-N9bf4"}],"tags":["cve.org","in-the-wild","exploit-available","kev"],"epss":0.32392,"epssPercentile":0.98292,"kev":true,"kevDateAdded":"2025-12-17","kevDueDate":"2025-12-24","kevRansomware":false,"exploits":{"github":4,"githubRepos":["https://github.com/cyberleelawat/CVE-2025-20393","https://github.com/KingHacker353/CVE-2025-20393","https://github.com/redpack-kr/Blackash-CVE-2025-20393"],"checkedAt":"2026-10-07T20:47:22.841Z"},"zeroDay":true,"ingestedAt":"2026-10-07T20:46:47.004Z","slug":"CVE-2025-20393","body":"## Overview\n\nA 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.\r\n\r\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 privileges.\n\n## Affected\n\n- `secure_email 14.0.0-698`\n- `secure_email 13.5.1-277`\n- `secure_email 13.0.0-392`\n- `secure_email 14.2.0-620`\n- `secure_email 13.0.5-007`\n- `secure_email 13.5.4-038`\n- `secure_email 14.2.1-020`\n- `secure_email 14.3.0-032`\n- `secure_email 15.0.0-104`\n- `secure_email 15.0.1-030`\n- `secure_email 15.5.0-048`\n- `secure_email 15.5.1-055`\n- `secure_email 15.5.2-018`\n- `secure_email 16.0.0-050`\n- `secure_email 15.0.3-002`\n- `secure_email 16.0.0-054`\n- `secure_email 15.5.3-022`\n- `secure_email 16.0.1-017`\n- `secure_email_and_web_manager 13.6.2-023`\n- `secure_email_and_web_manager 13.6.2-078`\n- `secure_email_and_web_manager 13.0.0-249`\n- `secure_email_and_web_manager 13.0.0-277`\n- `secure_email_and_web_manager 13.8.1-052`\n- `secure_email_and_web_manager 13.8.1-068`\n- `secure_email_and_web_manager 13.8.1-074`\n- `secure_email_and_web_manager 14.0.0-404`\n- `secure_email_and_web_manager 12.8.1-002`\n- `secure_email_and_web_manager 14.1.0-227`\n- `secure_email_and_web_manager 13.6.1-201`\n- `secure_email_and_web_manager 14.2.0-203`\n- `secure_email_and_web_manager 14.2.0-212`\n- `secure_email_and_web_manager 12.8.1-021`\n- `secure_email_and_web_manager 13.8.1-108`\n- `secure_email_and_web_manager 14.2.0-224`\n- `secure_email_and_web_manager 14.3.0-120`\n- `secure_email_and_web_manager 15.0.0-334`\n- `secure_email_and_web_manager 15.5.1-024`\n- `secure_email_and_web_manager 15.5.1-029`\n- `secure_email_and_web_manager 15.5.2-005`\n- `secure_email_and_web_manager 16.0.0-195`\n- `secure_email_and_web_manager 15.5.3-017`\n- `secure_email_and_web_manager 16.0.1-010`\n- `secure_email_and_web_manager 15.0.1-035`\n- `secure_email_and_web_manager 16.0.2-088`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"hadal","depthScore":86,"depthScoreParts":{"impact":55,"likelihood":6.5,"exploitation":25,"ransomware":0},"changes":[]}