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CVE-2026-73570

HighCVSS 8.9 / 10
Published Aug 13, 2026·Last modified Aug 23, 2026
Affected Components(58)
zimbra/zm-zcs
8.7.6
zimbra/zm-build
10.1.1
zimbra/zm-zcs
10.0.0
1 / 20
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.

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Risk Scores
Base Score
8.9

The vulnerability can be exploited over the network without needing physical access. It is difficult for an attacker to exploit this vulnerability and may require special conditions. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability. The vulnerability can affect other systems as well, not just the initial system. There is a high impact on the confidentiality of the information. There is a high impact on the integrity of the data. There is a low impact on the availability of the system.

Threat Intelligence
8.9

Exploitation activity has been observed. Apply available patches or mitigations urgently.

EPSS
32.38%

The exploit probability is moderate. The vulnerability is likely to be exploited in the next 30 days.

Exploit
8 exploits

8 exploits found for this vulnerability.

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