CVE-2026-73570

HighCVSS 8.9/10Known exploited (CISA KEV)Last modified Aug 24, 2026

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.

Metrics

CVSS 3.1 8.9/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L

Weakness enumeration

CWE-78

Affected software

No affected versions have been published.

Timeline

Published: Aug 13, 2026
Last modified: Aug 24, 2026
Added to CISA KEV: Aug 21, 2026
NVD status: Analyzed

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