Command injection in Zimbra Collaboration - CVE-2026-73570
Published: August 21, 2026 / Updated: August 31, 2026
Vulnerability identifier: #VU144519
CSH Severity: Critical
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-73570
CWE-ID: CWE-77
Exploitation vector: Remote access
Exploit availability:
The vulnerability is being exploited in the wild
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary commands.
The vulnerability exists due to command injection in the SNMP monitoring component when SNMP notifications are enabled. A remote attacker can send crafted input to execute arbitrary commands.
Only deployments with SNMP notifications enabled are vulnerable.
Affected software
Zimbra Collaboration
How to mitigate CVE-2026-73570
Install security update from vendor's website.
Zimbra Collaboration - update to 10.1.20