CVE-2026-73570
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.
CVSS Metrics
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L
Affected Products (1)
| Vendor | Product | Version |
|---|---|---|
| synacor | zimbra_collaboration_suite | * < 10.1.20 |
GitHub Security Advisory GHSA-jqh7-pchh-v74j
A remote code execution vulnerability exists in Zimbra Collaboration (ZCS) before 10.1.20 when...
References (4)
- https://wiki.zimbra.com/wiki/Security_Center Release Notes
- https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories Vendor Advisory
- https://moje.cert.pl/komunikaty/2026/145/aktywnie-wykorzystywana-podatnosc-w-zimbra-collaboration-suite/ Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-73570 US Government Resource
Risk Scores
Top 39% most likely to be exploited
CISA Known Exploited
Apply 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.