CVE-2026-73570

Zimbra Collaboration Remote Command Execution via SNMP Notification

Published Aug 13, 2026 CVSS 3.1 · 8.9 High EPSS 76.6% KEV · Listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Title Zimbra Collaboration Remote Command Execution via SNMP Notification
Type Values Removed Values Added
Title Remote Code Execution via SNMP Notification in Zimbra Collaboration
Type Values Removed Values Added
Title Remote Code Execution via SNMP Notification in Zimbra Collaboration
Type Values Removed Values Added
Title Command Injection via SNMP Notification in Zimbra Collaboration Suite
Type Values Removed Values Added
Title Command Injection via SNMP Notification in Zimbra Collaboration Suite
Type Values Removed Values Added
Title Remote Code Execution via SNMP Notification in Zimbra Collaboration Before 10.1.20
Type Values Removed Values Added
First Time appeared Synacor
Synacor zimbra Collaboration Suite
CPEs cpe:2.3:a:synacor:zimbra_collaboration_suite:*:*:*:*:*:*:*:*
Vendors & Products Synacor
Synacor zimbra Collaboration Suite
Type Values Removed Values Added
References
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'active', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Metrics kev

{'dateAdded': '2026-08-21T00:00:00+00:00', 'dueDate': '2026-08-24T00:00:00+00:00'}

Type Values Removed Values Added
Title Remote Code Execution via SNMP Notification in Zimbra Collaboration Before 10.1.20
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
First Time appeared Zimbra
Zimbra collaboration
Weaknesses CWE-78
CPEs cpe:2.3:a:zimbra:collaboration:*:*:*:*:*:*:*:*
Vendors & Products Zimbra
Zimbra collaboration
References
Metrics cvssV3_1

{'score': 8.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Aug 24, 2026, 12:17 PM
Reserved
Aug 12, 2026, 9:44 PM
Status
Analyzed
Published
Aug 13, 2026, 4:19 PM
Modified
Aug 24, 2026, 1:19 PM