CVE-2026-73570: CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in Zimbra Collaboration
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.
AI Analysis
Technical Summary
This vulnerability (CWE-78) in Zimbra Collaboration affects versions prior to 10.1.20 when the zimbra-snmp package is installed and SNMP notifications are enabled. It allows an unauthenticated remote attacker to execute arbitrary operating system commands by sending specially crafted SMTP requests. The root cause is improper neutralization of special elements in OS commands during SNMP notification processing. The CVSS 3.1 base score is 8.9, indicating high severity with network attack vector, high attack complexity, no privileges required, no user interaction, and impact on confidentiality, integrity, and low impact on availability.
Potential Impact
Successful exploitation allows unauthenticated remote attackers to execute arbitrary OS commands as the Zimbra user, potentially compromising system confidentiality and integrity. The impact on availability is low. This could lead to full system compromise depending on the privileges of the Zimbra user.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch information is provided at this time. Until a patch 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
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 v3.1
Score 8.9high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-78) in Zimbra Collaboration affects versions prior to 10.1.20 when the zimbra-snmp package is installed and SNMP notifications are enabled. It allows an unauthenticated remote attacker to execute arbitrary operating system commands by sending specially crafted SMTP requests. The root cause is improper neutralization of special elements in OS commands during SNMP notification processing. The CVSS 3.1 base score is 8.9, indicating high severity with network attack vector, high attack complexity, no privileges required, no user interaction, and impact on confidentiality, integrity, and low impact on availability.
Potential Impact
Successful exploitation allows unauthenticated remote attackers to execute arbitrary OS commands as the Zimbra user, potentially compromising system confidentiality and integrity. The impact on availability is low. This could lead to full system compromise depending on the privileges of the Zimbra user.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch information is provided at this time. Until a patch 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
- Remediation Level
- null
Threat ID: 6a7de5d0bf8831d5396651b8
Added to database: 08/13/2026, 15:42:08 UTC
Last enriched: 08/13/2026, 15:56:10 UTC
Last updated: 08/13/2026, 22:05:58 UTC
Views: 7
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