Vulnerability details
CVE-2025-20393
Actively exploited
Cisco Secure EmailCisco Secure Email and Web Manager
Cisco Secure Email Gateway and Cisco Secure Email and Web Manager Remote Command Execution Vulnerability
CVSS 3.1
10.0Critical
Remedy
Required action (CISA): Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. (due: 2025-12-24)
Official 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. 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 10.0Critical | 3.1 | CVEProject cvelistV5 (CNA) (cisco) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Cisco | Cisco Secure Email | 13.0.0-392 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Email | 13.0.5-007 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Email | 13.5.1-277 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Email | 13.5.4-038 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Email | 14.0.0-698 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Email | 14.2.0-620 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Email | 14.2.1-020 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Email | 14.3.0-032 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Email | 15.0.0-104 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Email | 15.0.1-030 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Email | 15.0.3-002 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Email | 15.5.0-048 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Email | 15.5.1-055 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Email | 15.5.2-018 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Email | 15.5.3-022 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Email | 16.0.0-050 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Email | 16.0.0-054 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Email | 16.0.1-017 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Email and Web Manager | 12.8.1-002 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Email and Web Manager | 12.8.1-021 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Email and Web Manager | 13.0.0-249 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Email and Web Manager | 13.0.0-277 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Email and Web Manager | 13.6.1-201 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Email and Web Manager | 13.6.2-023 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Email and Web Manager | 13.6.2-078 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Email and Web Manager | 13.8.1-052 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Email and Web Manager | 13.8.1-068 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Email and Web Manager | 13.8.1-074 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Email and Web Manager | 13.8.1-108 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Email and Web Manager | 14.0.0-404 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Email and Web Manager | 14.1.0-227 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Email and Web Manager | 14.2.0-203 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Email and Web Manager | 14.2.0-212 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Email and Web Manager | 14.2.0-224 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Email and Web Manager | 14.3.0-120 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Email and Web Manager | 15.0.0-334 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Email and Web Manager | 15.0.1-035 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Email and Web Manager | 15.5.1-024 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Email and Web Manager | 15.5.1-029 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Email and Web Manager | 15.5.2-005 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Email and Web Manager | 15.5.3-017 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Email and Web Manager | 16.0.0-195 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Email and Web Manager | 16.0.1-010 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Secure Email and Web Manager | 16.0.2-088 | CVEProject cvelistV5 (CNA) |
References and advisories
2
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Details
- Published
- 2025-12-17
- Last updated
- 2026-10-07
- State
- Published
- Assigner (CNA)
- cisco
- Kolun priority
- 89 · Critical
CISA KEV catalog
- Date added
- 2025-12-17
- Due date
- 2025-12-24
- Used in ransomware
- Unknown
Exploit prediction (EPSS)
32.39%
Probability of exploitation in 30 days
98.3%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- Active
- Technical impact
- Total
Weaknesses (CWE)
- CWE-20Improper Input Validation