CVE Watch24 de ago. de 2026

CVE-2026-73570

Zimbra Collaboration Suite (ZCS) OS Command Injection Vulnerability

CVSS

8.9

Alta

EPSS

71.7%

p99

KEV

SIM

21 de ago. de 2026

Exploit Today

0-100

Publicado: 13 de ago. de 2026 · Última mod.: 24 de ago. de 2026 · CWE-78

EPSS · 30d

71.7%EPSS · 30 dias71.7%

2026-10-082026-11-05

Ficha do catálogo KEV

Produto

Synacor / Zimbra Collaboration Suite (ZCS)

Vulnerabilidade

Zimbra Collaboration Suite (ZCS) OS Command Injection Vulnerability

Adicionado ao KEV

21 de ago. de 2026

Corrigir até

24 de ago. de 2026

Uso conhecido em ransomware

Não

Descrição resumida

Zimbra Collaboration Suite (ZCS) contains an OS command injection vulnerability which could allow an unauthenticated attacker to send specially crafted SMTP requests that may result in execution of arbitrary operating system commands as the Zimbra user.

Ação necessária

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.

Notas

https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories ; https://blog.zimbra.com/2026/07/patch-release-update-zimbra-10-1-20/ ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-73570

Descrição técnica

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.

Referências oficiais

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