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VULNERABILITIES

CVE-2026-73570 Details

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.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:8.9 HIGHVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://moje.cert.pl/komunikaty/2026/145/aktywnie-wykorzystywana-podatnosc-w-zimbra-collaboration-suite/ CISA-ADPThird Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-73570 CISA-ADPUS Government Resource
https://wiki.zimbra.com/wiki/Security_Center [email protected]Release Notes
https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories [email protected]Vendor Advisory

This CVE is in CISA's Known Exploited Vulnerabilities Catalog

Reference CISA's BOD 22-01 and Known Exploited Vulnerabilities Catalog for further guidance and requirements.

Vulnerability NameDate AddedDue DateRequired Action
Zimbra Collaboration Suite (ZCS) OS Command Injection VulnerabilityAug 21, 2026Aug 24, 2026Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Weakness Enumeration

CWE-IDCWE NameSource
CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')[email protected]

Affected Products

ProductVersions
synacor zimbra collaboration suite
< 10.1.20

CPE

  • cpe:2.3:a:synacor:zimbra_collaboration_suite:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

8 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-73570
NVD Published Date:
Aug 13, 2026
NVD Last Modified:
Aug 24, 2026
Source:
[email protected]
CVE-2026-73570 Details - Not Deferred