cbcvebase.
CVE-2025-20393
published 2025-12-17

CVE-2025-20393: 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…

critical10CVSS 3.1
AVNACLPRNUINSCCHIHAH
KEV
CISA Known Exploited Vulnerabilitydue 2025-12-24
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. This 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.

Affected

51 ranges· showing 25
VendorProductVersion rangeFixed in
ciscoasyncos< 15.0.5-01615.0.5-016
ciscoasyncos< 15.0.2-00715.0.2-007
ciscoasyncos>= 15.5 < 15.5.4-01215.5.4-012
ciscoasyncos>= 15.5 < 15.5.4-00715.5.4-007
ciscoasyncos>= 16.0 < 16.0.4-01616.0.4-016
ciscoasyncos>= 16.0 < 16.0.4-01016.0.4-010
ciscocisco_secure_email——
ciscocisco_secure_email——
ciscocisco_secure_email——
ciscocisco_secure_email——
ciscocisco_secure_email——
ciscocisco_secure_email——
ciscocisco_secure_email——
ciscocisco_secure_email——
ciscocisco_secure_email——
ciscocisco_secure_email——
ciscocisco_secure_email——
ciscocisco_secure_email——
ciscocisco_secure_email——
ciscocisco_secure_email——
ciscocisco_secure_email——
ciscocisco_secure_email——
ciscocisco_secure_email——
ciscocisco_secure_email——
ciscocisco_secure_email_and_web_manager——

CVSS provenance

nvdv3.110.0CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
vulncheck10.0CRITICAL
cisa10.0CRITICAL