CVE-2026-73570

Synacor · Published August 13, 2026

8.9

CVSS v3.1

HIGH

CISA KEV — Federal agencies must patch by deadline

Actively exploited in the wild

Patch availableGet patch

Description

A remote code execution vulnerability exists in Zimbra Collaboration (ZCS) before 10.1.20 when the optional zimbra-snmp package is installed and SNMP notifications are enabled. Due to improper sanitization of untrusted input during SNMP notification processing, an unauthenticated attacker can send specially crafted SMTP requests that may result in execution of arbitrary operating system commands as the Zimbra user.

Affected Products

Zimbra Collaboration Suite < 10.1.20

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L