Vulnerability Intelligence Report
Cisco Secure Email Gateway and Cisco Secure Email and Web Manager Remote Command Execution Vulnerability
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 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.
CISA KEV
SSVC: Active Exploitation
Automatable
CVSS Base Score
10.0
CRITICAL
Exploitability:3.9
Impact Score:6.1
EPSS Probability:29.06%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-20 ↗Improper Input Validation
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Cisco | Cisco Secure Email | 14.0.0-698 (affected), 13.5.1-277 (affected), 13.0.0-392 (affected), 14.2.0-620 (affected), 13.0.5-007 (affected), 13.5.4-038 (affected), 14.2.1-020 (affected), 14.3.0-032 (affected), 15.0.0-104 (affected), 15.0.1-030 (affected), 15.5.0-048 (affected), 15.5.1-055 (affected), 15.5.2-018 (affected), 16.0.0-050 (affected), 15.0.3-002 (affected), 16.0.0-054 (affected), 15.5.3-022 (affected), 16.0.1-017 (affected) |
| Cisco | Cisco Secure Email and Web Manager | 13.6.2-023 (affected), 13.6.2-078 (affected), 13.0.0-249 (affected), 13.0.0-277 (affected), 13.8.1-052 (affected), 13.8.1-068 (affected), 13.8.1-074 (affected), 14.0.0-404 (affected), 12.8.1-002 (affected), 14.1.0-227 (affected), 13.6.1-201 (affected), 14.2.0-203 (affected), 14.2.0-212 (affected), 12.8.1-021 (affected), 13.8.1-108 (affected), 14.2.0-224 (affected), 14.3.0-120 (affected), 15.0.0-334 (affected), 15.5.1-024 (affected), 15.5.1-029 (affected), 15.5.2-005 (affected), 16.0.0-195 (affected), 15.5.3-017 (affected), 16.0.1-010 (affected), 15.0.1-035 (affected), 16.0.2-088 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Cisco Systems, Inc. · Hosted Service · USA |
| Reserved | 2024-10-10T19:15:13 |
| Published | 2025-12-17T16:47:13 |
| Last Updated | 2026-02-26T16:07:31 |
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