Vulnerability in Mimecast Email Security

CVE-2020-36519

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.)

EPSS: 0.008 (52.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N.

Affected products

References

Frequently asked questions

What is CVE-2020-36519?
CVE-2020-36519 is a medium-severity vulnerability in Mimecast Email Security. CVSS score: 4.9/10. Published 2022-03-16.
How severe is CVE-2020-36519?
Medium severity. CVSS v3 base score is 4.9 out of 10.