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.
References
| Link | Resource |
|---|---|
| https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sma-attack-N9bf4 | Vendor Advisory |
| https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-20393 | US Government Resource |
Configurations
Configuration 1 (hide)
| AND |
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Configuration 2 (hide)
| AND |
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History
15 Jan 2026, 17:16
| Type | Values Removed | Values Added |
|---|---|---|
| Summary | (en) 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. |
18 Dec 2025, 15:41
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sma-attack-N9bf4 - Vendor Advisory | |
| References | () https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-20393 - US Government Resource | |
| CPE | cpe:2.3:a:cisco:secure_email_and_web_manager_virtual_appliance_m300v:-:*:*:*:*:*:*:* cpe:2.3:a:cisco:secure_email_gateway_virtual_appliance_c600v:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:secure_email_and_web_manager_m190:-:*:*:*:*:*:*:* cpe:2.3:o:cisco:asyncos:*:*:*:*:*:*:*:* cpe:2.3:h:cisco:secure_email_and_web_manager_m695:-:*:*:*:*:*:*:* cpe:2.3:a:cisco:secure_email_gateway_virtual_appliance_c100v:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:secure_email_and_web_manager_m390x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:secure_email_and_web_manager_m170:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:secure_email_and_web_manager_m680:-:*:*:*:*:*:*:* cpe:2.3:a:cisco:secure_email_and_web_manager_virtual_appliance_m100v:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:secure_email_gateway_c695:-:*:*:*:*:*:*:* cpe:2.3:a:cisco:secure_email_gateway_virtual_appliance_c300v:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:secure_email_and_web_manager_m195:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:secure_email_and_web_manager_m690:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:secure_email_and_web_manager_m390:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:secure_email_gateway_c195:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:secure_email_and_web_manager_m380:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:secure_email_and_web_manager_m690x:-:*:*:*:*:*:*:* cpe:2.3:a:cisco:secure_email_and_web_manager_virtual_appliance_m600v:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:secure_email_gateway_c395:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:secure_email_and_web_manager_m395:-:*:*:*:*:*:*:* |
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| First Time |
Cisco secure Email And Web Manager M690x
Cisco secure Email And Web Manager M690 Cisco secure Email And Web Manager M170 Cisco secure Email And Web Manager Virtual Appliance M100v Cisco secure Email And Web Manager M195 Cisco secure Email Gateway Virtual Appliance C600v Cisco asyncos Cisco Cisco secure Email And Web Manager Virtual Appliance M600v Cisco secure Email Gateway C695 Cisco secure Email And Web Manager M395 Cisco secure Email And Web Manager M390x Cisco secure Email And Web Manager M390 Cisco secure Email And Web Manager Virtual Appliance M300v Cisco secure Email Gateway C395 Cisco secure Email And Web Manager M695 Cisco secure Email And Web Manager M680 Cisco secure Email And Web Manager M190 Cisco secure Email Gateway Virtual Appliance C100v Cisco secure Email And Web Manager M380 Cisco secure Email Gateway C195 Cisco secure Email Gateway Virtual Appliance C300v |
17 Dec 2025, 21:15
| Type | Values Removed | Values Added |
|---|---|---|
| References |
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17 Dec 2025, 17:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2025-12-17 17:15
Updated : 2026-01-16 14:00
NVD link : CVE-2025-20393
Mitre link : CVE-2025-20393
CVE.ORG link : CVE-2025-20393
JSON object : View
Products Affected
cisco
- secure_email_gateway_c395
- secure_email_and_web_manager_m680
- secure_email_and_web_manager_virtual_appliance_m300v
- secure_email_and_web_manager_m695
- secure_email_and_web_manager_m690x
- secure_email_gateway_c695
- asyncos
- secure_email_and_web_manager_m395
- secure_email_gateway_virtual_appliance_c300v
- secure_email_and_web_manager_virtual_appliance_m600v
- secure_email_and_web_manager_m390
- secure_email_and_web_manager_m170
- secure_email_gateway_virtual_appliance_c100v
- secure_email_and_web_manager_virtual_appliance_m100v
- secure_email_gateway_c195
- secure_email_and_web_manager_m195
- secure_email_gateway_virtual_appliance_c600v
- secure_email_and_web_manager_m380
- secure_email_and_web_manager_m190
- secure_email_and_web_manager_m690
- secure_email_and_web_manager_m390x
CWE
CWE-20
Improper Input Validation