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.
Published: 2026-08-13
Score: 8.9 High
EPSS: < 1% Very Low
KEV: Yes
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Fri, 21 Aug 2026 19:30:00 +0000

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

Fri, 21 Aug 2026 18:30:00 +0000

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'}


Fri, 21 Aug 2026 17:00:00 +0000

Type Values Removed Values Added
Metrics kev

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


Thu, 13 Aug 2026 16:45:00 +0000

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

Thu, 13 Aug 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Thu, 13 Aug 2026 15:45:00 +0000

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'}


Subscriptions

Synacor Zimbra Collaboration Suite
Zimbra Collaboration
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-08-21T17:27:32.267Z

Reserved: 2026-08-12T21:44:20.945Z

Link: CVE-2026-73570

cve-icon Vulnrichment

Updated: 2026-08-13T15:57:21.280Z

cve-icon NVD

Status : Analyzed

Published: 2026-08-13T16:19:06.003

Modified: 2026-08-21T19:21:23.023

Link: CVE-2026-73570

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-13T21:30:10Z

Weaknesses