Description
Mimecast Email Security before 2020-01-10 allows any admin to spoof any domain, and pass DMARC alignment via SPF. This occurs through misuse of the address rewrite feature. (The domain being spoofed must be a customer in the Mimecast grid from which the spoofing occurs.)
Metrics
CVSS 3.1 4.9/10
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:NAffected software
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a | n/a |
References
- https://wesleyk.me/2020/01/10/my-first-vulnerability-mimecast-sender-address-verification/Exploit, Third Party Advisory
- https://wesleyk.me/2020/01/10/my-first-vulnerability-mimecast-sender-address-verification/Exploit, Third Party Advisory
Timeline
- Published
- Mar 16, 2022
- Last modified
- Jun 17, 2026
- NVD status
- Modified