CVE-2020-36519

PoC —

CVSS 3.1

4.9 medium

EPSS

<1%p55

Published

Mar 16, 2022 (Mar 16, 2022)

Modified

Jun 17, 2026

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.)

Vendors: mimecast
Products: email security
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

NVD CVE.org GitHub PoCs EPSS (0.8%)

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