FortiOS 5.0.x before 5.0.12 and 5.2.x before 5.2.4 supports anonymous, export, RC4, and possibly other weak ciphers when using TLS to connect to FortiGuard servers, which allows man-in-the-middle attackers to spoof TLS content by modifying packets.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Fortios | Fortinet | 5.0.9 | 5.0.9 |
| Fortios | Fortinet | 5.0.10 | 5.0.10 |
| Fortios | Fortinet | 5.2.1 | 5.2.1 |
| Fortios | Fortinet | 5.0.5 | 5.0.5 |
| Fortios | Fortinet | 5.0.1 | 5.0.1 |
| Fortios | Fortinet | 5.0.2 | 5.0.2 |
| Fortios | Fortinet | 5.0.7 | 5.0.7 |
| Fortios | Fortinet | 5.0.4 | 5.0.4 |
| Fortios | Fortinet | 5.0.11 | 5.0.11 |
| Fortios | Fortinet | 5.0.8 | 5.0.8 |
| Fortios | Fortinet | 5.2.3 | 5.2.3 |
| Fortios | Fortinet | 5.2.0 | 5.2.0 |
| Fortios | Fortinet | 5.2.2 | 5.2.2 |
| Fortios | Fortinet | 5.0.0 | 5.0.0 |
| Fortios | Fortinet | 5.0.3 | 5.0.3 |
| Fortios | Fortinet | 5.0.6 | 5.0.6 |