CVE-2026-73570: CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in Zimbra Collaboration
CVE-2026-73570 is a remote code execution vulnerability in Zimbra Collaboration Server (ZCS) versions before 10.1.20 when the optional zimbra-snmp package is installed and SNMP notifications are enabled. The flaw arises from improper sanitization of untrusted input during SNMP notification processing, allowing an unauthenticated attacker to send crafted SMTP requests that may execute arbitrary OS commands as the Zimbra user.
AI Analysis
Technical Summary
This vulnerability (CWE-78) affects Zimbra Collaboration Server prior to version 10.1.20 if the zimbra-snmp package is installed and SNMP notifications are enabled. Due to improper neutralization of special elements in OS commands during SNMP notification processing, unauthenticated attackers can exploit this by sending specially crafted SMTP requests, resulting in arbitrary command execution on the operating system with the privileges of the Zimbra user.
Potential Impact
Successful exploitation allows remote unauthenticated attackers to execute arbitrary operating system commands as the Zimbra user, potentially leading to full compromise of the affected server. The CVSS v3.1 score is 8.9 (High), reflecting high confidentiality, integrity, and low availability impact with network attack vector and no privileges or user interaction required.
Mitigation Recommendations
No official patch or remediation details are provided in the input data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, consider disabling the zimbra-snmp package or SNMP notifications if enabled to reduce exposure.
CVE-2026-73570: CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in Zimbra Collaboration
Description
CVE-2026-73570 is a remote code execution vulnerability in Zimbra Collaboration Server (ZCS) versions before 10.1.20 when the optional zimbra-snmp package is installed and SNMP notifications are enabled. The flaw arises from improper sanitization of untrusted input during SNMP notification processing, allowing an unauthenticated attacker to send crafted SMTP requests that may execute arbitrary OS commands as the Zimbra user.
CVSS v3.1
Score 8.9high
Affected software
Zimbra
Collaboration
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-78) affects Zimbra Collaboration Server prior to version 10.1.20 if the zimbra-snmp package is installed and SNMP notifications are enabled. Due to improper neutralization of special elements in OS commands during SNMP notification processing, unauthenticated attackers can exploit this by sending specially crafted SMTP requests, resulting in arbitrary command execution on the operating system with the privileges of the Zimbra user.
Potential Impact
Successful exploitation allows remote unauthenticated attackers to execute arbitrary operating system commands as the Zimbra user, potentially leading to full compromise of the affected server. The CVSS v3.1 score is 8.9 (High), reflecting high confidentiality, integrity, and low availability impact with network attack vector and no privileges or user interaction required.
Mitigation Recommendations
No official patch or remediation details are provided in the input data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, consider disabling the zimbra-snmp package or SNMP notifications if enabled to reduce exposure.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-08-12T21:44:20.945Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a7de5d0bf8831d5396651b8
Added to database: 08/13/2026, 15:42:08 UTC
Last enriched: 09/12/2026, 04:32:02 UTC
Last updated: 09/26/2026, 03:18:14 UTC
Views: 93
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