CVE-2020-13376: Securenvoy Securmail

Critical severity, CVSS 9.0. EPSS: 3.5% chance of exploitation in the next 30 days.

SecurEnvoy SecurMail 9.3.503 allows attackers to upload executable files and achieve OS command execution via a crafted SecurEnvoyReply cookie.

Affected products

• Securenvoy Securmail: version 9.3.503 only

Published 2020-08-07. Last modified 2026-06-17.