CVE-2025-20393
Cisco Secure Email Gateway and Cisco Secure Email and Web Manager Remote Command Execution Vulnerability
KEVCRITICAL 10.0EPSS 32.4%
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
- Cisco · Cisco Secure Email · Cisco Secure Email and Web Manager
- CVSS v3.1 CISCO
- 10.0 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H - EPSS
- 32.39% chance of exploitation in the next 30 days, 98th percentile
- CISA KEV
- added 2025-12-17
- Published
- 2025-12-17
- Updated
- 2026-10-07
Proof-of-concept exploits (3)
- cyberdudebivash/CYBERDUDEBIVASH-Cisco-AsyncOS-CVE-2025-20393-Scanner0★ · 2026-01-16
- cyberleelawat/CVE-2025-203932★ · 2025-12-19
- redpack-kr/Blackash-CVE-2025-203930★ · 2025-12-19