Cisco Email Security Appliance (ESA) / Cisco Secure Email Gateway

 

AsyncOSRelease TypeRelease Date
AsyncOS 11.0.0 for Cisco Email Security Appliances GD (General Deployment) 2017-10-07
AsyncOS 11.0.1 for Cisco Email Security Appliances MD (Maintenance Deployment) 2017-11-07
AsyncOS 11.0.2 for Cisco Email Security Appliances MD (Maintenance Deployment) 2018-10-23
AsyncOS 11.0.3 for Cisco Email Security Appliances MD (Maintenance Deployment) 2019-08-27
AsyncOS 11.0.4 for Cisco Email Security Appliances MD (Maintenance Deployment) 2021-03-25
AsyncOS 11.1.0 for Cisco Email Security Appliances GD (General Deployment) 2018-04-21
AsyncOS 11.1.1 for Cisco Email Security Appliances MD (Maintenance Deployment) 2018-09-30
AsyncOS 11.1.2 for Cisco Email Security Appliances MD (Maintenance Deployment) 2018-11-26
AsyncOS 11.1.3 for Cisco Email Security Appliances MD (Maintenance Deployment) 2019-05-31
AsyncOS 11.5.0 for Cisco Email Security Appliances
(Upgrade paths are not available as this is a manufacturing release for x95 platforms.)
  2019-06-17
AsyncOS 12.0.0 for Cisco Email Security Appliances GD (General Deployment) 2019-01-29
AsyncOS 12.1.0 for Cisco Email Security Appliances MD (Maintenance Deployment) 2019-06-12
AsyncOS 12.5.0 for Cisco Email Security Appliances GD (General Deployment) 2019-07-24
AsyncOS 12.5.1 for Cisco Email Security Appliances MD (Maintenance Deployment) 2019-12-06
AsyncOS 12.5.2 for Cisco Email Security Appliances MD (Maintenance Deployment) 2020-04-02
AsyncOS 12.5.3 for Cisco Email Security Appliances MD (Maintenance Deployment) 2021-02-24
AsyncOS 13.0.0 for Cisco Email Security Appliances GD (General Deployment) 2020-02-03
AsyncOS 13.0.1 for Cisco Email Security Appliances MD (Maintenance Deployment) 2020-05-28
AsyncOS 13.0.2 for Cisco Email Security Appliances MD (Maintenance Deployment) 2020-10-23
AsyncOS 13.5.1 for Cisco Email Security Appliances GD (General Deployment) 2020-06-12
AsyncOS 13.5.2 for Cisco Email Security Appliances MD (Maintenance Deployment) 2020-09-25
AsyncOS 13.5.3 for Cisco Email Security Appliances MD (Maintenance Deployment) 2021-01-20
AsyncOS 13.5.4 for Cisco Email Security Appliances MD (Maintenance Deployment) 2021-11-03
AsyncOS 14.0.0 for Cisco Secure Email Gateway GD (General Deployment) 2021-06-14
AsyncOS 14.0.1 for Cisco Secure Email Gateway MD (Maintenance Deployment) 2021-08-25
AsyncOS 14.0.2 for Cisco Secure Email Gateway MD (Maintenance Deployment) 2022-01-18
AsyncOS 14.2.0 for Cisco Secure Email Gateway GD (General Deployment) 2022-05-27
     

 

Note:
[Release Notes]
 https://www.cisco.com/c/en/us/support/security/email-security-appliance/products-release-notes-list.html

[Release Terminology]
 https://www.cisco.com/c/dam/en/us/products/collateral/security/web-security-appliance/content-security-release-terminology.pdf