| AsyncOS | Release Type | Release Date |
| AsyncOS 16.0 for Cisco Secure Email and Web Manager | GD (General Deployment) | 2024-10-03 |
| AsyncOS 15.5.3 for Cisco Secure Email and Web Manager | MD (Maintenance Deployment) | 2025-01-06 |
| AsyncOS 15.5.2 for Cisco Secure Email and Web Manager | MD (Maintenance Deployment) | 2024-08-22 |
| AsyncOS 15.5.1 for Cisco Secure Email and Web Manager | GD (General Deployment) | 2024-04-30 |
| AsyncOS 15.0.0 for Cisco Secure Email and Web Manager | MD (Maintenance Deployment) | 2023-08-05 |
| AsyncOS 14.2.0 for Cisco Secure Email and Web Manager | MD (Maintenance Deployment) | 2022-09-01 |
| AsyncOS 14.1.0 for Cisco Secure Email and Web Manager | MD (Maintenance Deployment) | 2022-01-17 |
| AsyncOS 14.0.0 for Cisco Secure Email and Web Manager | MD (Maintenance Deployment) | 2021-07-06 |
| AsyncOS 13.8.1 for Cisco Content Security Management Appliances | MD (Maintenance Deployment) | 2022-07-04 |
| AsyncOS 13.6.2 for Cisco Content Security Management Appliances | MD (Maintenance Deployment) | 2021-02-11 |
| AsyncOS 13.6.1 for Cisco Content Security Management Appliances | GD (General Deployment) | 2020-06-23 |
| AsyncOS 13.0.0 for Cisco Content Security Management Appliances | MD (Maintenance Deployment) | 2021-06-14 |
Cisco ESA/SMA
