Cisco is aware of a potential vulnerability.  Cisco is currently investigating and will update these details as appropriate as more information becomes available.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is in the KEV database since yesterday.

The EPSS score is 0.04033.

Exploitation active

Automatable yes

Technical Impact total

Affected Vendors & Products

Vendors Products
Cisco
  • Asyncos
  • Secure Email
  • Secure Email And Web Manager
  • Secure Email And Web Manager M170
  • Secure Email And Web Manager M190
  • Secure Email And Web Manager M195
  • Secure Email And Web Manager M380
  • Secure Email And Web Manager M390
  • Secure Email And Web Manager M390x
  • Secure Email And Web Manager M395
  • Secure Email And Web Manager M680
  • Secure Email And Web Manager M690
  • Secure Email And Web Manager M690x
  • Secure Email And Web Manager M695
  • Secure Email And Web Manager Virtual Appliance M100v
  • Secure Email And Web Manager Virtual Appliance M300v
  • Secure Email And Web Manager Virtual Appliance M600v
  • Secure Email Gateway
  • Secure Email Gateway C195
  • Secure Email Gateway C395
  • Secure Email Gateway C695
  • Secure Email Gateway Virtual Appliance C100v
  • Secure Email Gateway Virtual Appliance C300v
  • Secure Email Gateway Virtual Appliance C600v

Configuration 1 [-]

AND
cpe:2.3:o:cisco:asyncos:*:*:*:*:*:*:*:*
OR cpe:2.3:a:cisco:secure_email_and_web_manager_virtual_appliance_m100v:-:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_email_and_web_manager_virtual_appliance_m300v:-:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_email_and_web_manager_virtual_appliance_m600v:-:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_email_gateway_virtual_appliance_c100v:-:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_email_gateway_virtual_appliance_c300v:-:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_email_gateway_virtual_appliance_c600v:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:secure_email_and_web_manager_m170:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:secure_email_and_web_manager_m190:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:secure_email_and_web_manager_m195:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:secure_email_and_web_manager_m380:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:secure_email_and_web_manager_m390:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:secure_email_and_web_manager_m390x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:secure_email_and_web_manager_m395:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:secure_email_and_web_manager_m680:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:secure_email_and_web_manager_m690:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:secure_email_and_web_manager_m690x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:secure_email_and_web_manager_m695:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:secure_email_gateway_c195:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:secure_email_gateway_c395:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:secure_email_gateway_c695:-:*:*:*:*:*:*:*

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

Vendors Products
Cisco
  • Secure Email
  • Secure Email And Web Manager
  • Secure Email Gateway
References
Link Providers
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sma-attack-N9bf4 cve-icon cve-icon
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-20393 cve-icon cve-icon
History

Thu, 18 Dec 2025 15:45:00 +0000

Type Values Removed Values Added
First Time appeared Cisco asyncos
Cisco secure Email And Web Manager M170
Cisco secure Email And Web Manager M190
Cisco secure Email And Web Manager M195
Cisco secure Email And Web Manager M380
Cisco secure Email And Web Manager M390
Cisco secure Email And Web Manager M390x
Cisco secure Email And Web Manager M395
Cisco secure Email And Web Manager M680
Cisco secure Email And Web Manager M690
Cisco secure Email And Web Manager M690x
Cisco secure Email And Web Manager M695
Cisco secure Email And Web Manager Virtual Appliance M100v
Cisco secure Email And Web Manager Virtual Appliance M300v
Cisco secure Email And Web Manager Virtual Appliance M600v
Cisco secure Email Gateway C195
Cisco secure Email Gateway C395
Cisco secure Email Gateway C695
Cisco secure Email Gateway Virtual Appliance C100v
Cisco secure Email Gateway Virtual Appliance C300v
Cisco secure Email Gateway Virtual Appliance C600v
CPEs cpe:2.3:a:cisco:secure_email_and_web_manager_virtual_appliance_m100v:-:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_email_and_web_manager_virtual_appliance_m300v:-:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_email_and_web_manager_virtual_appliance_m600v:-:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_email_gateway_virtual_appliance_c100v:-:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_email_gateway_virtual_appliance_c300v:-:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_email_gateway_virtual_appliance_c600v:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:secure_email_and_web_manager_m170:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:secure_email_and_web_manager_m190:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:secure_email_and_web_manager_m195:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:secure_email_and_web_manager_m380:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:secure_email_and_web_manager_m390:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:secure_email_and_web_manager_m390x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:secure_email_and_web_manager_m395:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:secure_email_and_web_manager_m680:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:secure_email_and_web_manager_m690:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:secure_email_and_web_manager_m690x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:secure_email_and_web_manager_m695:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:secure_email_gateway_c195:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:secure_email_gateway_c395:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:secure_email_gateway_c695:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:asyncos:*:*:*:*:*:*:*:*
Vendors & Products Cisco asyncos
Cisco secure Email And Web Manager M170
Cisco secure Email And Web Manager M190
Cisco secure Email And Web Manager M195
Cisco secure Email And Web Manager M380
Cisco secure Email And Web Manager M390
Cisco secure Email And Web Manager M390x
Cisco secure Email And Web Manager M395
Cisco secure Email And Web Manager M680
Cisco secure Email And Web Manager M690
Cisco secure Email And Web Manager M690x
Cisco secure Email And Web Manager M695
Cisco secure Email And Web Manager Virtual Appliance M100v
Cisco secure Email And Web Manager Virtual Appliance M300v
Cisco secure Email And Web Manager Virtual Appliance M600v
Cisco secure Email Gateway C195
Cisco secure Email Gateway C395
Cisco secure Email Gateway C695
Cisco secure Email Gateway Virtual Appliance C100v
Cisco secure Email Gateway Virtual Appliance C300v
Cisco secure Email Gateway Virtual Appliance C600v

Wed, 17 Dec 2025 21:30:00 +0000

Type Values Removed Values Added
First Time appeared Cisco
Cisco secure Email
Cisco secure Email And Web Manager
Cisco secure Email Gateway
Vendors & Products Cisco
Cisco secure Email
Cisco secure Email And Web Manager
Cisco secure Email Gateway

Wed, 17 Dec 2025 21:15:00 +0000

Type Values Removed Values Added
References
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'active', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Wed, 17 Dec 2025 21:00:00 +0000

Type Values Removed Values Added
Metrics kev

{'dateAdded': '2025-12-17T00:00:00+00:00', 'dueDate': '2025-12-24T00:00:00+00:00'}

Wed, 17 Dec 2025 17:00:00 +0000

Type Values Removed Values Added
Description Cisco is aware of a potential vulnerability.  Cisco is currently investigating and will update these details as appropriate as more information becomes available.
Title Cisco Secure Email Gateway and Cisco Secure Email and Web Manager Remote Command Execution Vulnerability
Weaknesses CWE-20
References
Metrics cvssV3_1

{'score': 10, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H'}
cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published:

Updated: 2025-12-18T04:55:21.334Z

Reserved: 2024-10-10T19:15:13.266Z

Link: CVE-2025-20393

cve-icon Vulnrichment

Updated: 2025-12-17T17:01:24.075Z

cve-icon NVD

Status : Analyzed

Published: 2025-12-17T17:15:48.523

Modified: 2025-12-18T15:41:16.840

Link: CVE-2025-20393

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-12-17T21:18:42Z